1) New Orleans Civil Defense helmet. 2) Civil Defense helmet. Interior is stamped "U.S. GOV'T/PROPERTY/O.C.D.". 3) Auxiliary Fireman Civil Defense helmet. "FOREMAN/ENG. 32" painted on front of helmet. 4) Civil Defense Police plastic helmet. 5) Gentex Corp. plastic riot helmet. 6) Bell Toptex Police motorcycle helmet.