| Major Federal Savings and Loan Association | 2945 Gilbert Avenue, Cincinnati, OH 45206 | 1921-01-01 | 1986-07-25 |
| Manheim Savings and Loan Association | 33 Market Square, Manheim, PA 17545 | 1911-01-01 | 1984-07-31 |
| Mansfield Building and Loan Association | 100 Park Ave West, Mansfield, OH 44902 | 1876-01-01 | 1983-01-31 |
| Marble Bank | 47 Merchants Row, Rutland, VT 5701 | 1880-02-01 | 1996-01-03 |
| Maribel-Whitelaw Bank | Highway Z And Highway H, Maribel, WI 54227 | 1912-06-20 | 1986-10-01 |
| Marietta Savings Bank | 226 Third Street, Marietta, OH 45750 | 1923-01-01 | 2001-06-01 |
| Marine Bank | 2323 North Mayfair Road, Wauwatosa, WI 53226 | 1923-01-01 | 2009-06-26 |
| Marine Bank | 304 Second Avenue, Warren, PA 16365 | 1864-12-31 | 1993-04-23 |
| Marine Bank South, National Association | 500 Wisconsin Avenue, Racine, WI 53403 | 1853-01-01 | 1987-03-05 |
| Marine Bank South, National Association | 2222 63rd Street, Kenosha, WI 53140 | 1919-12-16 | 1985-09-14 |
| Marine Bank Watertown, N.A. | 500 Main Street, Watertown, WI 53094 | 1892-01-01 | 1984-06-01 |
| Marine First Peoples Bank | 18 North Arch Street, Janesville, WI 53545 | 1969-05-05 | 1982-12-31 |
| Marine National Bank of Waukesha | West Broadway And East Avenue, Waukesha, WI 53186 | 1963-04-22 | 1983-07-08 |
| Marine Tobacco Exchange Bank | 111 North Main Street, Edgerton, WI 53534 | 1897-01-01 | 1982-12-31 |
| Mariner Federal Savings and Loan Association | 400 S. W. 152nd Street, Seattle, WA 98166 | 1985-09-03 | 1986-05-09 |
| MarinerBank | 2313 East Sims Way, Port Townsend, WA 98368 | 2002-12-16 | 2006-12-01 |
| Marion Federal Savings and Loan Association | 170 East Center Street, Marion, OH 43302 | 1888-01-01 | 1985-01-31 |
| Maritime Savings Bank | 10427 West Lincoln Avenue, West Allis, WI 53227 | 1912-01-01 | 2010-09-17 |
| Market Bank | 7522 Hamilton Avenue, Mount Healthy, OH 45231 | 1883-01-01 | 2001-03-30 |
| Marlboro Savings and Loan Association | 405 East Main Street, Bennettsville, SC 29512 | 1950-01-01 | 1982-10-31 |
| Marlin National Bank | 164 Live Oak Street, Marlin, TX 76661 | 1934-04-20 | 1987-05-14 |
| Marquette Bank South Dakota, National Association | 101 North Main Avenue, Suite 101, Sioux Falls, SD 57117 | 1934-01-01 | 2000-04-14 |
| Marquette Savings Bank, S.A. | 10533 West National Avenue, West Allis, WI 53227 | 1912-01-01 | 2000-07-28 |
| Marshall County Bank | 526-Eighth Street, Britton, SD 57430 | 1927-08-01 | 1988-08-19 |
| Marshall Federal Savings and Loan Association | 501 So Washington, Marshall, TX 75670 | 1935-06-13 | 1990-01-18 |
| Marshall National Bank and Trust Company | 8372 West Main Street, Marshall, VA 20115 | 1905-12-01 | 2007-09-14 |
| Marshall Savings Association, F.A. | 501 South Washington, Marshall, TX 75670 | 1990-01-18 | 1990-06-29 |
| Mason County Bank of New Haven, W. Va. | Fifth Street, New Haven, WV 25265 | 1919-01-19 | 1985-03-31 |
| Massillon Savings and Loan Company | 54 Federal Ave N E, Massillon, OH 44646 | 1923-01-01 | 1980-08-31 |
| Maumee Valley National Bank | 414 Second Street, Defiance, OH 43512 | 1863-01-01 | 1984-12-22 |
| Maumee Valley National Bank | 414 Second Street, Defiance, OH 43512 | 1887-01-01 | 1983-08-15 |
| Maury Federal Savings Bank | 700 North High Street, Columbia, TN 38401 | 1934-07-01 | 1992-11-30 |
| Maxim Bank | 2401 Termini Street, Dickinson, TX 77539 | 1906-01-01 | 2003-07-01 |
| May National Bank of Ohio | 300 Sheffield Center, Lorain, OH 44055 | 1991-05-01 | 2005-11-10 |
| Mayflower Federal Savings Bank | 8370 Colerain Avenue, Cincinnati, OH 45239 | 1883-01-01 | 1997-08-11 |
| Mayflower Savings and Loan Association | 357 Reservoir Ave, Providence, RI 2907 | 1961-01-01 | 1980-07-31 |
| MBank Abilene, National Association | One Petroleum Place, Abilene, TX 79604 | 1964-02-01 | 1989-03-29 |
| MBank Alamo, National Association | 154 East Commerce Street, San Antonio, TX 78293 | 1891-03-02 | 1989-03-29 |
| MBank Arboretum | 9739 Great Hills Trail, Austin, TX 78759 | 1986-07-28 | 1988-02-19 |
| MBank Arlington | 1301 South Bowen Road, Arlington, TX 76013 | 1971-01-08 | 1987-09-25 |
| MBank Ashford | 877 North Dairy Ashford Road, Houston, TX 77024 | 1974-07-01 | 1985-04-29 |
| MBank Austin North, National Association | 5407 Interregional Highway, Austin, TX 78761 | 1961-01-03 | 1988-02-19 |
| MBank Austin, National Association | 201 West 6th Street, Austin, TX 78780 | 1890-05-28 | 1989-03-29 |
| MBank Bassett, National Association | 6075 Gateway Boulevard West, El Paso, TX 79991 | 1962-09-27 | 1987-06-27 |
| MBank Beaumont | 350 Dowlen Road, Beaumont, TX 77704 | 1971-03-15 | 1988-03-18 |
| MBank Belt Line | 1111 North Beltline Road, Garland, TX 75040 | 1975-01-02 | 1986-04-25 |
| MBank Brenham, National Association | 303 North Market Street, Brenham, TX 77833 | 1883-07-11 | 1989-03-29 |
| MBank Centerville, National Association | 1000 West Centerville Road, Garland, TX 75041 | 1974-03-22 | 1988-01-22 |
| MBank Clear Lake, National Association | 1550 Bay Area Boulevard, Harris County, TX 77546 | 1978-08-14 | 1987-12-11 |
| MBank Copperfield, National Association | 15840 Fm 529, Houston, TX 77095 | 1982-02-11 | 1987-12-11 |
| MBank Corpus Christi South, National Association | 4646 Corona Drive, Corpus Christi, TX 78472 | 1984-04-23 | 1988-09-23 |
| MBank Corsicana, National Association | 101 North Beaton Street, Corsicana, TX 75110 | 1917-07-05 | 1989-03-29 |
| MBank Dallas, National Association | 1704 Main Street, Dallas, TX 75265 | 1916-10-14 | 1989-03-29 |
| MBank Denton County, National Association | 250 Stemmons Service Road South, Lewisville, TX 75067 | 1963-06-07 | 1989-03-29 |
| MBank Denton, National Association | 215 West Hickory Street, Denton, TX 76201 | 1892-01-01 | 1987-08-01 |
| MBank El Paso West, National Association | 6960 North Mesa Street, El Paso, TX 79912 | 1981-05-14 | 1987-06-27 |
| MBank Fort Worth East | 2001 Beach Street, Fort Worth, TX 76103 | 1951-03-24 | 1987-07-01 |
| MBank Fort Worth, National Association | Main And Seventh Streets, Fort Worth, TX 76101 | 1903-04-20 | 1989-03-29 |
| MBank Franklin, National Association | 9811 Dyer Street, El Paso, TX 79914 | 1974-07-01 | 1987-06-27 |
| MBank Garland | 111 South Garland Road, Garland, TX 75046 | 1947-01-02 | 1988-01-22 |
| MBank Grand Prairie | 202 West Main Street, Grand Prairie, TX 75050 | 1930-10-16 | 1988-01-22 |
| MBank Greens Parkway, National Association | 1200 Greens Parkway, Houston, TX 77273 | 1984-03-01 | 1985-07-01 |
| MBank Greenspoint, National Association | 16855 Northchase, Houston, TX 77205 | 1970-05-15 | 1987-12-11 |
| MBank Greenville, National Association | 2600 Wesley Street, Greenville, TX 75401 | 1921-01-01 | 1989-03-29 |
| MBank Greenway | 3403 Richmond Avenue, Houston, TX 77046 | 1966-02-22 | 1987-07-01 |
| MBank Gulf Freeway, National Association | 8411 Gulf Freeway, Houston, TX 77207 | 1960-03-10 | 1987-12-11 |
| MBank Harlingen, National Association | 1121 East Austin Street, Harlingen, TX 78550 | 1974-02-19 | 1987-09-25 |
| MBank Houston Southeast | 1155 Edgebrook Drive, Houston, TX 77034 | 1964-06-24 | 1985-10-01 |
| MBank Houston Southwest | 9494 Southwest Freeway, Houston, TX 77074 | 1975-08-28 | 1987-07-01 |
| MBank Houston, National Association | 910 Travis, Houston, TX 77002 | 1965-07-01 | 1989-03-29 |
| MBank Irving | 2904 Belt Line Road, Irving, TX 75062 | 1969-05-26 | 1987-12-04 |
| MBank Jefferson County, National Association | 8200 Highway 69 And Turtle Creek Dr., Port Arthur, TX 77640 | 1900-01-01 | 1989-03-29 |
| MBank Las Colinas, National Association | 5525 Macarthur Boulevard, Lb45, Irving, TX 75038 | 1984-04-16 | 1987-10-01 |
| MBank Lincoln Centre, National Association | 5400 Lbj Freeway, Suite 150, Dallas, TX 75240 | 1982-10-23 | 1987-12-04 |
| MBank Long Point, National Association | 7807 Long Point Road, Houston, TX 77055 | 1956-05-16 | 1987-12-11 |
| MBank Longview, National Association | 101 North Fredonia Street, Longview, TX 75601 | 1889-07-19 | 1989-03-29 |
| MBank Mansfield | 106 South Main Street, Mansfield, TX 76063 | 1947-04-19 | 1987-09-25 |
| MBank Market Center | 1825 North Industrial Street, Dallas, TX 75207 | 1954-05-25 | 1987-12-04 |
| MBank Marshall, National Association | 101 East Austin Street, Marshall, TX 75670 | 1889-09-30 | 1989-03-29 |
| MBank Memorial, National Association | 877 North Dairy Ashford Road, Houston, TX 77024 | 1971-10-04 | 1987-12-11 |
| MBank MidCities, National Association | 1301 South Bowen Road, Arlington, TX 76013 | 1962-07-27 | 1989-03-29 |
| MBank Odessa, National Association | 3800 East 42nd Street, Odessa, TX 79760 | 1945-04-21 | 1989-03-29 |
| MBank Orange, National Association | 3300 Edgar Brown Drive, Orange, TX 77630 | 1960-01-25 | 1989-03-29 |
| MBank Pasadena, National Association | 1001 East Southmore Street, Pasadena, TX 77502 | 1919-07-09 | 1988-06-10 |
| MBank Preston | 8111 Preston Road, Dallas, TX 75225 | 1939-11-06 | 1987-12-04 |
| MBank Round Rock, National Association | 1111 North Ih 35, Round Rock, TX 78664 | 1920-08-20 | 1989-03-29 |
| MBank San Antonio North, National Association | 10999 Interstate Highway 10 West, San Antonio, TX 78279 | 1983-02-14 | 1988-03-04 |
| MBank San Antonio South, National Association | 2130 S.W. Military Drive, San Antonio, TX 78221 | 1978-09-05 | 1988-03-04 |
| MBank San Felipe, National Association | 5599 San Felipe Street, Houston, TX 77027 | 1981-02-09 | 1985-01-10 |
| MBank San Felipe, National Association | 5599 San Felipe Street, Houston, TX 77027 | 1974-10-07 | 1987-07-01 |
| MBank Sherman, National Association | 200 North Travis Street, Sherman, TX 75090 | 1872-09-28 | 1989-03-29 |
| MBank The Woodlands, National Association | 1400 Woodloch Forest Drive, The Woodlands, TX 77380 | 1980-07-01 | 1989-03-29 |
| MBank Travis Park | 715 Navarro Street, San Antonio, TX 78205 | 1892-01-01 | 1984-12-31 |
| MBank Vista Hills, National Association | 1790 Lee Trevino Boulevard, El Paso, TX 79936 | 1979-09-04 | 1987-06-27 |
| MBank West Oaks, National Association | 14500 Richmond At Highway 6, Houston, TX 77082 | 1981-02-09 | 1987-12-11 |
| MBank Westbury, National Association | 11310 Chimney Rock, Houston, TX 77035 | 1959-04-30 | 1987-12-11 |
| MBank Westchase, National Association | 9801 Westheimer Road, Houston, TX 77042 | 1972-11-16 | 1987-12-11 |
| MBank Wichita Falls Southwest, National Association | 4809 Southwest Parkway, Wichita Falls, TX 76308 | 1964-08-15 | 1987-04-30 |
| MBank Wichita Falls, National Association | 719 Scott Street, Wichita Falls, TX 76307 | 1884-05-04 | 1989-03-29 |
| MC Lean Savings and Loan Association | Dolley Madison Boulevard, Mc Lean, VA 22101 | 1977-05-16 | 1988-07-31 |
| McAllen State Bank | 200 South Tenth Street, Mcallen, TX 78501 | 1945-12-10 | 1988-04-19 |
| McColl State Bank | Main Street, Mccoll, SC 29070 | 1932-06-01 | 1972-01-03 |
| Mccurtain County Savings and Loan Association | 702 Southeast Washington St, Idabel, OK 74745 | 1919-01-01 | 1979-01-31 |
| McKeesport National Bank | Sinclair Street And Fifth Avenue, Mckeesport, PA 15132 | 1887-05-19 | 1988-02-26 |
| McKenzie State Bank | 5251 Main Street, Springfield, OR 97478 | 1998-11-16 | 2001-12-31 |
| McKinley Federal Savings and Loan Association | 5995 Warren-Youngstown Rd, Niles, OH 44446 | 1918-01-01 | 1987-11-30 |
| Mclean Federal Savings and Loan Association | Dolley Madison Boulevard, Mclean, VA 22101 | 1988-07-01 | 1988-12-28 |
| Mcminnville Federal Savings and Loan Association | 128 East Main Street, Mcminnville, TN 37110 | 1974-11-04 | 1985-01-31 |
| McMullen Bank | Main And Elm Streets, Tilden, TX 78072 | 1977-01-05 | 2006-07-28 |
| Mechanics Building and Loan Association | 128 E Queen Street, Chambersburg, PA 17201 | 1890-01-01 | 1983-02-28 |
| Mechanics Savings Bank | 51 South Front Street, Steelton, PA 17113 | 1900-01-01 | 2003-04-25 |
| Med Center Bank and Trust | 6631 South Main Street, Houston, TX 77030 | 1959-08-11 | 1992-10-16 |
| MedCentre Bank, National Association | 711 Navarro Street, San Antonio, TX 78205 | 1984-08-29 | 1989-09-14 |
| Medford State Bank | 220 East Tenth Street, Medford, OR 97501 | 1979-08-06 | 1987-05-09 |
| Media Federal Savings and Loan Association | Front & Orange Sts, Media, PA 19063 | 1869-01-01 | 1982-12-31 |
| Medical Center State Bank | 1312-1316 North Lottie Avenue, Oklahoma City, OK 73117 | 1973-02-07 | 1988-10-27 |
| Medicine Bow State Bank | 520 Utah Street, Medicine Bow, WY 82329 | 1980-10-17 | 1986-08-08 |
| Medina Valley State Bank | 200 Tx Hwy 132 N, Devine, TX 78016 | 1937-07-17 | 2010-06-04 |
| Meigs County Bank | 116 North Main Street, Decatur, TN 37322 | 1907-01-01 | 1999-11-05 |
| Mellon Bank (Central) National Association | 122 West College Avenue, State College, PA 16804 | 1890-01-01 | 1985-11-01 |
| Mellon Bank (Central) National Association | 122 West College Avenue, State College, PA 16801 | 1918-09-18 | 1991-10-01 |
| Mellon Bank (East) PSFS, National Association | Mellon Bank Center, Philadelphia, PA 19102 | 1836-01-01 | 1991-01-01 |
| Mellon Bank (North) National Association | 100 Seneca Street, Oil City, PA 16301 | 1900-02-08 | 1991-10-01 |
| Mellon Bank, F.S.B. | Two Mellon Bank Center, Suite 375, Pittsburgh, PA 15259 | 1972-06-17 | 1999-12-21 |
| Memorial Bank, National Association | 12649 Willcrest Drive, Houston, TX 77024 | 1983-12-01 | 1990-05-24 |
| Memorial Bank, National Association | 12649 Memorial Drive, Houston, TX 77024 | 1985-11-01 | 1987-10-30 |
| Merabank Texas, FSB | 500 N Mesa St, El Paso, TX 79945 | 1988-06-22 | 1991-05-31 |
| Mercantile Bank & Trust | 40 N.E. Loop 410, San Antonio, TX 78216 | 1960-02-17 | 1988-07-01 |
| Mercantile Bank & Trust, FSB | 5820 W. Northwest Highway, Dallas, TX 75225 | 1985-06-12 | 2005-01-14 |
| Mercantile Bank Texas | 4500 Mercantile Plaza, Suite 100, Fort Worth, TX 76137 | 1979-01-15 | 2004-08-13 |
| Mercantile Bank, N.A. | S.E. Fourth And Eastern, Moore, OK 73160 | 1979-08-20 | 1989-09-08 |
| Mercantile Bank, National Association | 835 East Levee Street, Brownsville, TX 78520 | 1914-01-01 | 1999-06-19 |
| Merchants & Miners National Bank of Oak Hill | Main Street, Oak Hill, WV 25901 | 1905-01-01 | 1991-08-30 |
| Merchants & Planters Bank | Main Street, Winnsboro, SC 29180 | 1911-01-01 | 1973-02-28 |
| Merchants and Farmers Bank | 430 Crawford Street, Portsmouth, VA 23705 | 1885-01-01 | 1977-08-22 |
| Merchants and Mechanics Federal Savings Bank | 20 South Limestone Street, Springfield, OH 45502 | 1892-01-01 | 1991-08-23 |
| Merchants and Planters Bank | 302 East Main Street, Newport, TN 37821 | 1889-01-01 | 1993-06-23 |
| Merchants Bank | 441 Austin Avenue, Port Arthur, TX 77640 | 1909-02-02 | 1972-12-30 |
| Merchants Bank | 93 Ocoee Street, N.E., Cleveland, TN 37311 | 1902-01-20 | 1991-02-15 |
| Merchants Bank | 999 North Shepherd Drive, Houston, TX 77008 | 1970-10-01 | 1999-02-01 |
| Merchants Bank (North) | 26 West Market Street, Wilkes-Barre, PA 18701 | 1829-01-01 | 1985-06-15 |
| Merchants Bank (North) | 24-26 West Market Street, Wilkes-Barre, PA 18701 | 1874-05-23 | 1993-06-18 |
| Merchants Bank of Evansville | 23 North Madison Street, Evansville, WI 53536 | 1976-05-03 | 1985-03-31 |
| Merchants Bank, National Association | 702 Hamilton Street, Allentown, PA 18101 | 1930-03-30 | 1993-06-18 |
| Merchants Bank, National Association | 3140 Market Place, Onalaska, WI 54650 | 1912-09-10 | 2008-04-01 |
| Merchants Marine Bank | 215 Powers Street, Port Isabel, TX 78578 | 1960-05-02 | 1989-03-16 |
| Merchants State Bank | 5217 Ross Avenue, Dallas, TX 75206 | 1946-01-09 | 1989-01-19 |
| Merchants State Bank | First And Rusk Streets, Mount Enterprise, TX 75681 | 1908-01-01 | 1992-01-01 |
| Mercury Savings Association of Texas | 800 Lamar & 8th St, Wichita Falls, TX 76301 | 1960-12-29 | 1988-08-31 |
| Meridian Bank | 35-43 North Sixth Street, Reading, PA 19603 | 1932-07-01 | 1996-06-27 |
