The car-builder's dictionary: an illustrated vocabulary of terms which designate American railroad cars, their parts and attachments (1879)
Master Car Builders' Association, Forney, Matthias N. (Matthias Nace), 1835-1908, Garey, Leander, Smith, Calvin A · New York : The Railroad Gazette · leaf 376
Bolster s, etc. 3±2 For list of names of the parts designated by the numbers in the engravings, see page 341. i 5 ,' 10 … Fig. 233. Fig. 234. "Wooden Body-bolster. "Woodex Body-bolster. Transverse Section of Floor-timbers, showing Bolsters. Side View. I |=hz 3U 13 ' U-=--9 Fig. 233. Fig. 236. Irox Body-bolster. Irox Body-bolster. Transverse Section of Floor-timbers, showing Bolsters. Side View.
Railroad cars
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.