The 1900 census lists David C. Abrams, born May 1865 in WI, wife Isabel, born Feb 1865 in Canada, sons Paul R., born Dec 1890 and Ward C., born Aug 1896, living in Iowa City.
Paul's WWI draft card shows he was born in Audubon, IA Dec 21, 1890. The 1930 census shows him living in Cook County, IL with wife Myrtle 36, daughter Kathryn 7 and son Paul R. 4.The Social Security Death Index shows Paul Sr. died in Nov 1971.
Ward's WWII draft card shows he was born Aug 3, 1896 in Iowa City and was living in Oak Park, IL. Oddly I could not find him in the 1930 census or in the WWI draft registrations.