Libraries collect data all the time: circulation figures, patron records, inventory, purchase orders, database use, collection additions and withdrawls, number of walk-ins, staff and visit scheduling. Perhaps you collect turn-around data about functions such as purchase orders and fulfillment, processing, shelving, interlibrary loans, service calls. You might collect data about reference desk transactions, program participation, use of library handouts (as in number printed and taken), and website use. You might do surveys. Even photographs about the library and its use constitute data. What are some other data you might collect now – or might consider?