E. R. Markham 
American Steel Worker 
A Twenty-Five Years’ Experience in the Selection, Annealing, Working, Hardening and Tempering of Various Kinds and Grades of Steel

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The various machines used in working iron and steel to shape have been improved, and made heavier in the parts subjected to strain, in order that heavier cuts and faster feeds might be taken to reduce the cost of production.