The University of Pennsylvania (UPenn) lists a large number of wartime documents relating to the Office of Civilian Defence.

The Internet Archive also has many of the OCD and associated defense documents published during WWII. Search for “civil defence” or “civilian defense”.

A number of museums and online archives have scanned copies of original documents issued by the Office of Civilian Defense during WWII.

Online Document Resources

Key documents, handbooks and publications

Local Organization for Civilian Defense - July, 1941 - guide for setting up a local civilian defense organization

You and the War - issued by the OCD to encourage citizens to participate in the domestic war effort during World War II

Junior Citizens Service Corps - how boys and girls under 16 could volunteer and aid the war effort

Legal Aspects of Civilian Protection - the appendices in this manual have detailed information on insignia

Medical Division of the U.S. Office of Civilian Defense - details Federal, State and local government medical initiatives