Self-educator; marine and stationary engineers catechism
A 1915 Philadelphia self-instruction manual in question-and-answer form by William C. Wilson, written for marine and stationary steam engineers preparing for licence examinations. Line diagrams show boiler heads, stay-bolt and rivet layouts, cord-and-arc measuring methods with inch dimensions, and a labelled indicator card tracing admission, cut-off, expansion and exhaust—usable as clean technical linework and annotated curve charts.
