During a visit to the Gold Star Museum at Camp Dodge, Polk County, Iowa, I found their library had thousands of registration cards from World War I. I scanned about 30 of them for names in my family tree (not necessarily related). I have not found these in any database, anywhere online.
So, for about the next year, I will be presenting them here.
This card is for my first cousin, 1x removed, Frank O'Connell. He was 29 years old when he was inducted at Des Moines, Polk County, Iowa on the 23rd of February 1918. He was living in Des Moines, Polk County, Iowa at the time of his induction.
This is the FindAGrave page for Frank.