An experiment conducted in 1975 tested the effects of two policy changes in five Oklahoma County Library System bookmobiles: (1) conversion to predominantly paperback collections; and (2) relaxation of overdue policies. There were two indicators of success: (1) the bookmobiles experienced a 26% increase in circulation during the year; and (2) the…

The Oklahoma County (Oklahoma) Library executed a six-month experiment in 1974 on one of its five bookmobiles to determine whether: (1) patrons would accept a primarily paperback book collection; (2) the cost of unreturned paperbound books in a no-fine and no-overdue-notice situation would be cost-effective when compared to the predictable loss of…