Audel’s Plumbers And Steamfitters Guides 1 and 2 are vintage reference books published by Theo Audel And Company in 1949. Authored by Frank Duncan Graham and Thomas Emery, these hardcover books cover the subject area of plumbing with a focus on plumbing systems and practices. The publications are categorized as advanced, beginner, and intermediate level texts, ideal for adult education and further education in the field of plumbing. With a compact size of 5″ in length and 6.75″ in height, these guides provide valuable insights and information for those interested in the plumbing industry.