Category History, Distribution and Uses Subject Cost analysis Title Library tray, grade slips and cost of clerical work for 5 lots – one short box Description Library trays for analysis and accompanying grade slips. The cost of clerical work at this time was as follows: Receiving, separating receipts, tally card at 20 minutes @ $0.50/hr = $0.17 Grade slips at 15 minutes @ $0.50/hr = $0.125 Office accounting at 10 minutes @ $0.75/hr = $0.125 General office costs (postage ($0.20), stationary ($0.40) and accounting and office service ($2.50)) = $3.10 Total cost $3.46 Location Los Angeles, CA Date 10/27/1931 Source Jack S. Shepherd Larger Picture 1000 x 1245 (71 kb)