1967 IREM Book: "The Real Estate Management Department - How to Establish and Operate It". Written by IREM, with Contributing Editors: Stanley Arnheim, CPM, Henry Beaumont, CPM, William Everett, CPM, Edward Hacker, CPM, Lloyd Hanford, Sr., CPM, and Howard Sonn, CPM. This classic Second Edition describes how a "Property Supervisor" might be paid $500 per month. For the "Cashier-Bookkeeper Assistant" you will need to give "her" a starting salary "from $400 to $600" (per year???), and you can set up a credit account at your local hardware store for the janitor to get supplies "up to a limit of $10 to $15."