| Name |
Source: (page) |
| O'Sperry, William | History of DuPage County: (107) |
| Ostrander, Fannie E. | A Random Review of West Chicago History: (102) |
| Ostrander, R. H. | Atlas - Twentieth Century Atlas of DuPage County …: (146) |
| Ostrander, R.S. | History of DuPage County: (18) |
| Ostrum, William | Hinsdale the Beautiful 1897 (newspaper Supplement): (43) |
| O'Sullivan, Patrick | The Village of Volunteers - Clarendon Hills 1924-1974: (40) |
| Otis, Arthur F. | Glen Ellyn's Story & Her Neighbors: (344) |
| Otis, Isabelle M. | Glen Ellyn's Story & Her Neighbors: (344) |
| O'Toole, Donald E. | The Village of Volunteers - Clarendon Hills 1924-1974: (61) |
| Ott, | Glen Ellyn's Story & Her Neighbors: (375), Around the Arboretum: History of DuPage County: (v) |
| Ott, Anne | Around the Arboretum: History of DuPage County: (30) |
| Ott, Elizabeth | Around the Arboretum: History of DuPage County: (30) |
| Ott, Francis | Atlas - Combination Atlas Map of DuPage County, Illinois: (XI,35,37), Atlas - 1874 Atlas & History of DuPage County (Reprint): (70,71) |
| Ott, Franklin | Glen Ellyn's Story & Her Neighbors: (375), Atlas - Combination Atlas Map of DuPage County, Illinois: (37), Atlas - 1874 Atlas & History of DuPage County (Reprint): (71), Around the Arboretum: History of DuPage County: (30) |
| Ott, G. | History of DuPage County: (154) |
| Ott, Joseph | Atlas - Combination Atlas Map of DuPage County, Illinois: (37), Atlas - 1874 Atlas & History of DuPage County (Reprint): (71), Around the Arboretum: History of DuPage County: (30) |
| Ott, Laura | Around the Arboretum: History of DuPage County: (30) |
| Ott, Sarah Jane | Glen Ellyn's Story & Her Neighbors: (375) |
| Otterpohl, Conrad | Atlas - Combination Atlas Map of DuPage County, Illinois: (X,11), Atlas - 1874 Atlas & History of DuPage County (Reprint): (36) |
| Otto, | Elmhurst! 150 Colorful Years: (11) |
| Otto, Bob | The Village of Volunteers - Clarendon Hills 1924-1974: (31) |
| Otto, M. | Atlas - Combination Atlas Map of DuPage County, Illinois: (02), Atlas - 1874 Atlas & History of DuPage County (Reprint): (27) |
| Otto, Robert Mrs. | The Village of Volunteers - Clarendon Hills 1924-1974: (55) |
| Ouska, Irene M. | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (08/22/1991-2) |
| Overcamp family | Archival Resources on Germans in Elmhurst: (13,14) |
| Overholzer, Samuel | History of DuPage County: (118) |
| Overkamp, Edna | Archival Resources on Germans in Elmhurst: (13) |
| Overkamp, Henry A. | Addison (IL) 1833-1976: (10) |
| Overkamp, Herman | Old Elmhurst (1973 reprint): (18), Elmhurst! 150 Colorful Years: (50) |
| Overstreet, John T. | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (03/17/1988-5) |
| Overton, Carl | Story of a Parish: Immaculate Conception (Catholic): (52) |
| Owen, | Come Fly to the Prairie: Hist. of Warrenville: (16) |
| Owen, Alice | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (01/31/1985-3) |
| Owen, Colonel | Come Fly to the Prairie: Hist. of Warrenville: (7) |
| Owen, Elisha G. | History of DuPage County: (100) |
| Owen, Esther | History of DuPage County: (190) |
| Owen, Mitzi | The Village of Volunteers - Clarendon Hills 1924-1974: (57) |
| Owen, Mona Anne | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (01/31/1985-3) |
| Owen, Thomas | Come Fly to the Prairie: Hist. of Warrenville: (4) |
| Owen, Troy | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (01/31/1985-3) |
| Owen, W. J. | Recollections: Story of Villa Park, Illinois: (93) |
| Owen, Walter | Recollections: Story of Villa Park, Illinois: (52) |
| Owens, O. | Recollections: Story of Villa Park, Illinois: (49) |
| Owens, Thomas J. V. | Elmhurst, IL: Origin of Names, Streets...Landmarks… A Bicentennial Project: (20) |
| Owings, Theodore | Glen Ellyn's Story & Her Neighbors: (357) |
| Oyer, Joseph | History of DuPage County: (64) |
| Paaren, Vernon | The Village of Volunteers - Clarendon Hills 1924-1974: (48) |
| Packard, B. G. | The Elmhurst Story:Biography of Progress 1910-60: (52) |
| Packard, Bruce | The Elmhurst Story:Biography of Progress 1910-60: (21) |
| Padalik, S. S. | The Village of Volunteers - Clarendon Hills 1924-1974: (48) |
| Padalik, Sylvia Schanilec | The Village of Volunteers - Clarendon Hills 1924-1974: (15) |
| Paddock, H. C. | Elmhurst! 150 Colorful Years: (46) |
| Paddock, J.A. | Hinsdale, Hinsdale Doings: (104) |
| Padgham, | The Heritage Homes of West Chicago: (15,45) |
| Padgham, John T. | The Heritage Homes of West Chicago: (44) |
| Padgham, Richard | A Random Review of West Chicago History: (36) |
| Padgham, T. | The Heritage Homes of West Chicago: (15), Atlas - Combination Atlas Map of DuPage County, Illinois: (36), Atlas - 1874 Atlas & History of DuPage County (Reprint): (61), A Random Review of West Chicago History: (41) |
| Padgham, Thomas | A Random Review of West Chicago History: (36), Atlas - Twentieth Century Atlas of DuPage County …: (131,146) |
| Padgham, Thomas Mrs. | Atlas - Twentieth Century Atlas of DuPage County …: (131) |
| Padovano, Mary Jo | Zion (Ev. Lutheran Church) Sesqui. Historical Calendar: (30) |
| Page, Anne | History of DuPage County: (155) |
| Page, B. V. | Atlas - Combination Atlas Map of DuPage County, Illinois: (17), Atlas - 1874 Atlas & History of DuPage County (Reprint): (44) |
| Page, Clara | Glen Ellyn's Story & Her Neighbors: (360) |
| Page, David | History of DuPage County: (157), Atlas - Combination Atlas Map of DuPage County, Illinois: (IV), Atlas - 1874 Atlas & History of DuPage County (Reprint): (4) |
| Page, E. E. | History of DuPage County: (52,237), Atlas - Combination Atlas Map of DuPage County, Illinois: (VIII,X,13) |
| Page, Edmund | Glen Ellyn's Story & Her Neighbors: (367) |
| Page, Edmund E. | History of DuPage County: (70,200) |
| Page, Elizabeth | Glen Ellyn's Story & Her Neighbors: (367) |
| Page, Harlan | Glen Ellyn's Story & Her Neighbors: (368) |
| Page, Mary Ann | Glen Ellyn's Story & Her Neighbors: (367) |
| Page, Polly | Glen Ellyn's Story & Her Neighbors: (367) |
| Page, R. R. | Atlas - Combination Atlas Map of DuPage County, Illinois: (11), Atlas - 1874 Atlas & History of DuPage County (Reprint): (37) |
| Page, Roy | Hinsdale, Hinsdale Doings: (274) |
| Page, Thomas R. | Hinsdale, Hinsdale Doings: (133) |
| Page, Thomas Roy | Hinsdale, Hinsdale Doings: (78) |
| Page, Tom | Hinsdale, Hinsdale Doings: (210) |
| Page, William | Glen Ellyn's Story & Her Neighbors: (367) |
| Page. E. E. | Atlas - 1874 Atlas & History of DuPage County (Reprint): (40) |
| Paider, John J. | The Village of Volunteers - Clarendon Hills 1924-1974: (53) |
| Paider, John Mrs. | The Village of Volunteers - Clarendon Hills 1924-1974: (37,38) |
| Paige, Gardner | History of DuPage County: (237) |
| Paine, | Atlas - Combination Atlas Map of DuPage County, Illinois: (IV), Atlas - 1874 Atlas & History of DuPage County (Reprint): (4) |
| Paine, Christopher | History of DuPage County: (13,55), Come Fly to the Prairie: Hist. of Warrenville: (35) |
| Paine, Robert E. | History of DuPage County: (125) |
| Painter, Allen | History of DuPage County: (125) |
| Paintin, Ruth Mrs. | The Elmhurst Story:Biography of Progress 1910-60: (48) |
| Pajor, Charles | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (11/07/1991-4), Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (01/18/1990-6) |
| Pajor, Kevin Charles | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (01/18/1990-6) |
| Pajor, Mark David | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (11/07/1991-4) |
| Palgen, James | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (09/22/1988-3) |
| Palgen, Kristina Blu | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (09/22/1988-3) |
| Palma, Ann Christine | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (06/13/1985-3) |
| Palma, Jerry | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (06/13/1985-3) |
| Palma, Mary Ann | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (06/13/1985-3) |
| Palmer, Agnes | Glen Ellyn's Story & Her Neighbors: (375) |
| Palmer, Alonzo | History of DuPage County: (97) |
| Palmer, Alonzo L. | History of DuPage County: (94) |
| Palmer, Anna | Atlas - Combination Atlas Map of DuPage County, Illinois: (18), Atlas - 1874 Atlas & History of DuPage County (Reprint): (45) |
| Palmer, Calvin A. | Newspaper index - Warrenville Digest, 1984-1991 (vital stats): (11/14/1991-12) |
| Palmer, Elliott | The Village of Volunteers - Clarendon Hills 1924-1974: (22,25) |