Locomotive Lubricators, ICS # 5604, Edition 1, by J.W. Harding, published International Correspondence Schools, Scranton, Pennsylvania, 1949. Reproduced by Nation Builder Books, Mebane, NC, 2020, 5½ x 8½ photocopied booklet, 90 pages.

Please note this is a new photoduplicated reproduction, not an original.