Three binders worth of material composing a seemingly complete correspondence course in vehicle customization published by the Customizing Center, a division of North American Correspondence Schools out of Newport Beach, California. Materials are frequently copyrighted 1976 and the worksheets of the previous owner, a Ray Sanders of Lexington, Missouri, date to 1977. Sanders appears to have been an enlisted Airman at the time, which jives with period advertisements for the course found in car magazines, comic books, Popular Mechanics, etc... touting it as GI and VA accredited. 

The generously illustrated, original course materials provide a comprehensive guide to automotive customization, business planning, etc... heavily emphasizing custom painting and interior work on vans including murals, shag carpeting installation, etc... with total 1970's saturation. OCLC surprisingly notes two holdings (with no clarity on completeness or a precise match to the present volumes) at public libraries in Kansas (Central Kansas Library System) and Michigan (Great Bend Public Library). 

[Automobilia] : [Education]. CUSTOMIZING CENTER [Cover Titles - Correspondence Course Materials on Van and Vehicle Customization]. Newport Beach, California: North American Correspondence Schools, (1976). Three uniform, illustrated blue vinyl covered binders around metal snap-ring assemblies. Each holding roughly 500 pages of printed and illustrated material on paper (more than 1500 pages in total). With about 15 sheets of manuscript coursework on loose ruled notebook leaves laid-in additional. Faint musty odor about contents. Contents with infrequent tear at binder holes, otherwise all about very good.