| 501 | S8072066189 | Lynn's Lost and Found | Lynn Gipson |
| 502 | S8072384427 | Lynn's Queen Anne's County Marriage Records | Lynn Smith, Sandra Willis, Karen A Thomas |
| 503 | S5351730431 | Mac 14Febxx.FTW | — |
| 504 | S8072066325 | Mackie and Halley of co Fife, Vermont and Illinois | macmiadhachain@yahoo.com |
| 505 | S8072073684 | Madison Co. Missouri Marriage Books 1821-1851 | — |
| 506 | S8072073687 | Madison Co. Missouri Marriage Books 1821-1851 | — |
| 507 | S8072073690 | Madison Co. Missouri Marriage Books 1921-1951 | — |
| 508 | S8072066237 | Madison Co., Iowa, Genweb Online Birth Records | — |
| 509 | S8072066238 | Madison Co., Iowa, Genweb Online Cemetery Records | — |
| 510 | S8072066236 | Madison Co., Iowa, Genweb Online Marriage Records | — |
| 511 | S8072073693 | Madison Co., Missouri Bible and Family Records | — |
| 512 | S8072073696 | Madison Co., Missouri Marriages 1821-1851 on USGenWeb | — |
| 513 | S8072073706 | Madison Co., Mo, Bible and Family Records | — |
| 514 | S5351729842 | Magna Charta Sureties 1215, Frederick Lewis Weis, additions by Walter Lee Sheppard Jr, 5th Edition, 1999 | — |
| 515 | S8029498594 | Mahoning County, Ohio - Death Certificate | — |
| 516 | S16144775209 | Mainz, Germany, Family Registers 1760-1900 | — |
| 517 | S16144775020 | Manchester Press, Manchester, Iowa | — |
| 518 | S8029499204 | Mansfield Cemetery, Mansfield, Richland County, Ohio | — |
| 519 | S8072066204 | Mariages de Beauport (1673-1966) | B. Pontbriand |
| 520 | S8072066195 | Mariages de Laprairie | Jette, Irenee; Pontbriand, B. |
| 521 | S8029499381 | Marion County, Ohio Death Certificate | — |
| 522 | S3110083304 | Marquis Who Was Who In America | — |
| 523 | S8072068420 | Marquis Who Was Who In America | — |
| 524 | S8029552305 | Marriage Certificate | — |
| 525 | S8029516709 | Marriage Records | — |
| 526 | S8072244775 | Marriage Records 1796-1844 , Rev. Elijah Herrick | Compiled by Melvin W. Lethbridge |
| 527 | S8072384423 | Marriages and Deaths from Baltimore Newspapers, 1796-1816 | Robert Barnes |
| 528 | S8072384425 | Marriages and Deaths from the Maryland Gazette, 1727-1839 | Robert Barnes |
| 529 | S8072066200 | Marriages of Notre Dame Church – Ogdensburg NY | Jim Bertrand/Anne Cady, http://freepages.genealogy.rootsweb.com/~stlawgen |
| 530 | S8072255552 | Marriages Performed by John Ross, Minister of the Church of Christ, Charleston, Montgomery County, New York | DAR Cemetery, Church, and Town Records |
| 531 | S8072384410 | Married in Maryland, Kent County 1796-1850 | Schmidt & Harper |
| 532 | S8072073724 | Mary Alice Blaylock | — |
| 533 | S5352854546 | marybrockway.FTW | — |
| 534 | S5352052862 | Maryland Calendar of Wills | Wright, Jane Baldwin & F Edward |
| 535 | S8072387482 | Maryland Census, 1772-1890 | Jackson, Ron V., Accelerated Indexing Systems, comp |
| 536 | S8072387484 | Maryland Colonial Census, 1776 | Kinard, June, ed |
| 537 | S5352860691 | Maryland Eastern Shore Vital Records. | — |
| 538 | S5352084889 | Maryland Genealogical Bulletin, Vol. 1-38 | Charles E. Mylan, Jr. |
| 539 | S16144775101 | Maryland Historical Society Magazine | http://www.mdhs.org |
| 540 | S5352861526 | Maryland Land Patent Records. | — |
| 541 | S16144775152 | Maryland Marriage Evidences, 1634-1718 | Barnes, Robert William |
| 542 | S5352193459 | Maryland Marriages, 1634-1777 | Robert Barnes, Compiler |
| 543 | S8072384418 | Maryland Marriages, 1655-1850 | Dodd, Jordan, Liahona Research, comp |
| 544 | S16144775125 | Maryland Marriages, 1667-1899 | Dodd, Jordan, Liahona Research, comp |
| 545 | S8072384421 | Maryland Marriages, 1778-1800 | Robert Barnes |
| 546 | S8072384419 | Maryland Marriages, 1801-1820 | Robert Barnes |
| 547 | S8072384424 | Maryland Records, Vol. II | — |
| 548 | S16144775123 | Maryland State Archives | Maryland |
| 549 | S8072387551 | Maryland, A Middle Temperament | Robert J. Brugger, Gynthia Horsburgh Requardt |
| 550 | S16144775154 | Maryland, Births and Christenings Index, 1662-1911 | Ancestry.com |