Frederic P. Hartwell has authored or co-authored numerous books, including Practical Electrical Wiring, American Electrician's Handbook, and National Electrical Code Handbook. Writing for both amateurs and professionals, Herbert P. Richter authored the first edition of Wiring Simplified in 1932 followed by Practical Electrical Wiring in 1939. W. Creighton Schwan is the coauthor of Wiring Simplified and Practical Electrical Wiring for several editions and a columnist for the magazine Electrical Contractor. Creighton Schwan coauthored Wiring Simplified and Practical Electrical Wiring for several editions and was a columnist for the magazine Electrical Contractor.