Many thanks to Bob Newman and Cadyn Klassett for scans of several manuals, including four “How To Make ‘Em Books” (two from 1938, one from 1951, and one from 1954), a “Models Built with the Master Builder’s Erector Set” guide, and a “1963 Erector Instruction Book”. These PDF scans are available to ACGHS members only on the Erector Set Manuals page. If you are an ACGHS member, please be sure you are logged in before accessing this page. And thanks again to Bob and Cadyn!