| "Lymerick Plantation" - Berkeley County, South Carolina | O'Brien, Michael J. | Article in Journal | | 1926 |
| "The Irish Donation" - 1676 | O'Brien, Michael J. | Article in Journal | | 1913 |
| A glance at some pioneer Irish in the south | O'Brien, Michael J. | Article in Journal | | 1907 |
| An authoritive account of the earliest Irish pioneers in New England | O'Brien, Michael J. | Article in Journal | | 1919 |
| Births, marriages and burials and other records of the Irish in America in and about the eighteenth century | O'Brien, Michael J. | Article in Journal | | 1913 |
| Captain Patrick O'Flynn, friend of general George Washington | O'Brien, Michael J. | Article in Journal | | 1922 |
| Chapter of Irish charity in thanksgiving history | O'Brien, Michael J. | Article in Journal | | 1919 |
| Colonel Marcus Maloney, U.S. Army | O'Brien, Michael J. | Article in Journal | | 1926 |
| Cornelius Merry and Matthew Clesson, pioneer Irish man of Northampton, Massachusetts | O'Brien, Michael Joseph | Article in Journal | | 1918 |
| Cornelius Merry and Matthew Clesson, pioneer Irishmen of Northampton, Mass. | O'Brien, Michael J. | Article in Journal | | 1918 |
| Divided nation undivided house : Labour and Tory policy in Northern Ireland | O'Brien, Michael Patrick | Article in Journal | | 1985 |
| Early immigrants to Virginia (1623 to 1666) collected by George Cabell Greer, clerk, Virginia State Land Office, from the records of the Land Office , in Richmond | O'Brien, Michael J. | Article in Journal | | 1914 |
| Early Irish schoolmasters in New England | O'Brien, Michael J. | Article in Journal | | 1917 |
| Early Irish settlers at Worcester, Mass. | O'Brien, Michael J. | Article in Journal | | 1919 |
| Early Pittsburgh, Pennsylvania | O'Brien, Michael J. | Article in Journal | | 1914 |
| Early records of Portsmouth, N. H. | O'Brien, Michael J. | Article in Journal | | 1914 |
| Etymologica | O'Brien, Michael | Article in Book | | 1995 |
| Extracts from Virginia church records | O'Brien, Michael J. | Article in Journal | | 1919 |
| Francis McDonnell, a son of Erin, captured the English flag at Stony Point | O'Brien, Michael J. | Article in Journal | | 1922 |
| Hercules Mulligan : confidential correspondent of George Washington | O'Brien, Michael | Monograph or Collective Volume | P. J. Kennedy | 1937 |
| How Jeremiah McCaferty led Lord Cornwallis astray | O'Brien, Michael J. | Article in Journal | | 1926 |
| How the descendants of Irish settlers in America were written into history as "Anglo-Saxons" and "Scotch-Irish" | O'Brien, Michael J. | Article in Journal | | 1919 |
| Immigration, land, probate, administration, baptismal, marriage, burial, trade, military and other records of the Irish in America in the seventeenth and eighteenth century | O'Brien, Michael J. | Article in Journal | | 1915 |
| Immigration, land, probate, administration, birth, marriage and burial records of the Irish in America in and about the eighteenth century | O'Brien, Michael J. | Article in Journal | | 1914 |
| Independence | Bulfin Winder, JeanneO'Brien, MichaelPey, Brian | Article in Book | | 2003 |
| Irish immigrants from English ports in the eighteenth century | O'Brien, Michael J. | Article in Journal | | 1919 |
| Irish immigrants to New England - extracts from the minutes of the selectmen of the town of Boston, Mass. | O'Brien, Michael J. | Article in Journal | | 1914 |
| Irish mariners in New England | O'Brien, Michael J. | Article in Journal | | 1918 |
| Irish pioneers and schoolmasters in Butler County, Pennsylvania | O'Brien, Michael J. | Article in Journal | | 1919 |
| Irish pioneers in Delaware | O'Brien, Michael J. | Article in Journal | | 1919 |
| Irish pioneers in New Hampshire | O'Brien, Michael J. | Article in Journal | | 1926 |
| Irish schoolmasters in the American colonies | O'Brien, Michael J. | Article in Journal | | 1926 |
| Irish settlers in America | O'Brien, Michael Joseph | Monograph or Collective Volume | Genealogical Publishing | 1979 |
| Irish settlers in Connecticut in the seventeenth centuries | O'Brien, Michael J. | Article in Journal | | 1925 |
| James Fintan Lalor of Tinnakill | O'Brien, Michael | Article in Book | | 1999 |
| Land bounty certificates in Virginia | O'Brien, Michael J. | Article in Journal | | 1926 |
| Land grants to Irish settlers in the colony and state of Virginia | O'Brien, Michael J. | Article in Journal | | 1925 |
| Major Patrick Carr and captain Patrick McGriff, two gallant officers of the Georgia continental line | O'Brien, Michael J. | Article in Journal | | 1922 |
| Marriage notices published in the South Carolina Gazette | O'Brien, Michael J. | Article in Journal | | 1926 |
| Me jewel and darlin' Dublin | MacThomáis, ÉamonnO'Brien, Michael | Monograph or Collective Volume | O'Brien Press | 1994 |
| Obituaries Fredrick J. (Freddie) Shekleton 1940-2016 | O'Brien, Michael | Article in Journal | | 2016 |
| Obituary notices in the Providence, Rhode Island, newspapers | O'Brien, Michael J. | Article in Journal | | 1926 |
| Patrick Hogan, schoolmaster and revolutionary soldier | O'Brien, Michael J. | Article in Journal | | 1922 |
| Patrick McCann, hero of the border | O'Brien, Michael J. | Article in Journal | | 1922 |
| Pioneer Irish families in Virginia, the Meades and Sullivans | O'Brien, Michael J. | Article in Journal | | 1926 |
| Pioneer Irish in New England | O'Brien, Michael | Monograph or Collective Volume | P. J. Kennedy | 1937 |
| Records of burials at Christ Church, Philadelphia | O'Brien, Michael J. | Article in Journal | | 1914 |
| Schemes credible and incredible | O'Brien, Michael | Article in Book | | 1996 |
| Sergeant Patrick Cavanaugh, a brave soldier of the revolution | O'Brien, Michael J. | Article in Journal | | 1922 |
| Shipping statistics of the Philadelphia Custom House, 1733 to 1774, refute the Scotch-Irish theory | O'Brien, Michael J. | Article in Journal | | 1923 |
| Shipping statistics of the Philadelphia custom house, 1733 to 1774, refute the Scotch-Irish theory. | O'Brien, Michael Joseph | Article in Journal | | 1923 |
| Some examples of the "Scotch-Irish" in America | O'Brien, Michael J | Article in Journal | | 1915 |
| Some interesting notes on Washington, D. C. | O'Brien, Michael J. | Article in Journal | | 1914 |
| Some interesting shipping statistics of the eighteenth century | O'Brien, Michael J. | Article in Journal | | 1914 |
| Some Irish names culled from the official records of New Hampshire | O'Brien, Michael J. | Article in Journal | | 1919 |
| Some stray tidbits of the American revolution | O'Brien, Michael J. | Article in Journal | | 1918 |
| Some traces of the Irish settlers in the colony of Massachusetts Bay | O'Brien, Michael J. | Article in Journal | | 1919 |
| Stray historical items from the Green Mountain State | O'Brien, Michael J. | Article in Journal | | 1919 |
| The "Scotch-Irish" myth | O'Brien, Michael J. | Article in Journal | | 1925 |
| The Connecticut Irish in the revolution | O'Brien, Michael J. | Article in Journal | | 1923 |
| The Crehore family of Massachusetts | O'Brien, Michael J. | Article in Journal | | 1918 |
| The Cumberland County, Pennsylvania, militia in the revolution | O'Brien, Michael J. | Article in Journal | | 1922 |
| The early Irish in Maine | O'Brien, Michael J. | Article in Journal | | 1911 |
| The first census of the United States, some pointed comments on the manner of taking same and the results thereof. An interesting paper on a subject not heretofore touched by the society | O'Brien, Michael J. | Article in Journal | | 1909 |
| The first regiment of the Pennsylvania line - the most famous body of men in the continental army | O'Brien, Michael J. | Article in Journal | | 1922 |
| The Irish ancestry of Theodore Roosevelt | O'Brien, Michael J. | Article in Journal | | 1918 |
| The Irish at Bunker Hill : evidence of Irish participation in the battle of 17th June 1775 | O'Brien, Michael JosephSullivan, A. M.Sullivan, Catherine | Monograph or Collective Volume | Irish University Press | 1968 |
| The Irish burghers of New Amsterdam and freemen of New York | O'Brien, Michael J. | Article in Journal | | 1918 |
| The Irish in Charleston, South Carolina | O'Brien, Michael J. | Article in Journal | | 1926 |
| The Irish in Montgomery and Washington Counties, Maryland, in 1778 | O'Brien, Michael J. | Article in Journal | | 1925 |
| The Kane family in America | O'Brien, Michael J. | Article in Journal | | 1918 |
| The Kelly's, Burkes and Shea's of the Massachusetts line | O'Brien, Michael Joseph | Article in Journal | | 1922 |
| The Kellys, Burkes and Sheas of the Massachusetts line | O'Brien, Michael J. | Article in Journal | | 1922 |
| The Lalors of Tenakill, 1767-1893 | O'Brien, Michael Gerard | Thesis | | 1987 |
| The Murphys in Virginia Patrick Murphy, a brave soldier of the Virginia continental line | O'Brien, Michael J. | Article in Journal | | 1922 |
| The record of sergeant William Murphy | O'Brien, Michael J. | Article in Journal | | 1925 |
| Timothy O'Brien, an early Irish immigrant | O'Brien, Michael J. | Article in Journal | | 1926 |