port of entry if on the original record.
O'BRIEN, Annie
O'BRIEN, James
O'BRIEN, James Richard
O'BRIEN, John Everett
O'BRIEN, Mary
O'CONNELL, Mary
O'CONNOR, Susan Mary
O'LEARY, John
O'NEILL, Lorraine Pauline Marie
O'SULLIVAN, Kathleen Mary
OAKES, Richard Gilbert
OBERHAMMER, Johann
OBIN, Robert Marcel
OCHS, Bertha Yvonne
ODE, Ernst
OEHLERKING, Henri
OEMIG, Joachim
OESTERREICHER, Frieda
OESTREICH, John
OETKE, Heinrich
OFFORD, Louise
OGILVIE, William Thompson
OGILVIE, William Thomson
OHL, Josef Bernhard
OHLERICH, Ernst
OHLERICH, Rudolf
OHLERICH, Wilhelm
OHLINKAMP, Heinrich
OHLINKAMP, William
OHLINKAMP, Wm
OHLSEN, William
OLANDER, Elsa Maria
OLDENBURG, Albert
OLDENBURG, August
OLDENBURG, August
OLDENBURG, William
OLDFIELD, John
OLDFIELD, Richard
OLESON, Carl J
OLFSCHELFKE, John
OLIVA, Maria
OLSDOTTER, Elsa
OLSEN, Andrew
OLSEN, Carl Christian
OLSEN, Ellen Josefina
OLSEN, Hilda Margret
OLSEN, Olaf Sverre
OLSON, Alfred
OLSON, Carl Gust
OLSON, Carl J
OLSON, Elsa
OLSON, Gust
OLSON, Gustaf
OLSON, Ida Teresia
OLSON, John Fingal
OLSON, Vera Maria
OLSSON, Anders H
OLSSON, Frida Ingeborg
OLTROGGE, Heinrich
OLUFSEN, Ole Bernhard
OMASTA, Mary
OP DEN KELDER, Hermanus Peter
OP DEN KELDER, Marie
OPARIL, Marie Louise
OPPERMANN, Ane Edith Elisabeth
OREY, Francis
ORFANOS, Aristotle George
ORGO, Anna
OSBORNE, John
OSOLS, Augusts
OSTENSEN, Anna
OSTERHOLZ, August
OSTERLAND, August
OSTERLAND, Fred
OSTMANN, Heinrich
OSTOICH, Mildred Evelyn
OSTRUM, Charles Arthur
OSTRUM, Nels Anshlem
OSWALD, John
OTT, Boniface
OTT, Francis
OTT, Joseph
OTT, Killian
OTT, Louis
OTT, Stephen
OTTE, John
OTTERPOHL, Conrad
OTTOSSON, Ture Birger
OTZWIRK, Richard Thomas
OUTRAM, James
OUTRAM, Reuben
OVEREND, James Joseph
OVERTON, Pamela Mary
OWCZARZAK, Magdalena Margaret
OWEN, John
OWEN, Pryce Edward
OXFORD, Louise
Compiled by the DuPage County IL Genealogical Society