Aircraft sheet metal workers' manual, by Robert C. Look. A condensed guide and reference of requirements, specifications, formulas, standards, symbols, code numbers, alloys, tools and tool usage as required for developing acccuracy and certain skills in aircraft sheet metal work
Aviation; a reading course and general reference work on first principles of flying, construction and maintenance of planes, aircraft engines, meteorology, aircraft instruments, navigation, aircraft sheet metal work, practical mathematics
Laying out for boiler makers and sheet metal workers : a practical treatise on the layout of boilers, stacks, tanks, pipes, elbows and miscellaneous sheet metal work