Practical instructor and reference book for locomotive firemen and engineers: a practical treatise ..
A technical manual on locomotive operation and repair written by Charles F. Lockhart and published by Norman W. Henley in New York in 1911, aimed at working firemen and engineers preparing for examination. The plates are line-engraved sectional cuts of air brake valves, injectors and steam fittings, hatched and stippled to distinguish cast metal from passages, with letter keys and arrows tracing air and steam flow through the chambers.
