sale is for 3 catalogs from the same trade school. 2 are from the national electrical school and one is from the university of radio no dates on the electric school catalogs, but reference to planned construction of boulder dam dates books to late 20's. 48 pages. roughly 12 x 9 inches.  the catalogs have different covers, but the content is identical. nice books, the book with illustrated cover is missing pages 17-22 it appears they were cut out. the last  photo is open to the pages where they were removed. it shows a clean knife or scissors cut, stubs of pages remain.  a catalog from the University of Radio, dated 1932 also a trade school catalog which was located at the same location as the  National  Electric School. examine photos, ask questions what you see is what you get no returns free shipping.