English: The first drive-in movie theater built by Camden, NJ industrialist Richard M. Hollingshead. in Pennsauken, near Camden, New Jersey. It had a 40 x 50 ft (12 x 15 meter) screen and could accommodate 400 cars. The admission was $0.25 per car plus $0.25 per person. Hollingsworth patented the concept May 16, 1933, it opened June 6, 1933 and the first film shown was Adolphe Menjou's Wife Beware. Within a few years drive-ins were being built all over the USA.
This 1933 issue of Electronics magazine would have the copyright renewed in 1961. Online page scans of the Catalog of Copyright Entries, published by the US Copyright Office can be found here. [1] Search of the Renewals for Periodicals for 1960, 1961, and 1962 show no renewal entries for Electronics. Therefore the magazine's copyright was not renewed and it is in the public domain.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.