User blog comment:AGrimAuxiliatrix1/"The Orphanage"- 1960's Chicago Primary Sources/@comment-25052433-20150620182805

Google and Wikipedia will likely be your best friends in this case. More than just Chicago though, make sure you do a good check on what currents trends were at that time, as far as politics, technology and if you really want to get into it, slang and such.

Perhaps find out what the most popular songs, cars, clothing and foods were at that time also. Honestly, it shouldn't be too difficult.