Penn's library began in 1750 with a donation of books from cartographer Lewis Evans. Twelve years later, then-provost William Smith sailed to England to raise additional funds to increase the collection size. Benjamin Franklin was one of the libraries' earliest donors and, as a trustee, saw to it that funds were allocated for the purchase of texts from London, many of which are still part of the collection, more than 250 years later. It has grown into a system of 15 libraries (13 are on the contiguous campus) with 400 full-time equivalent (FTE) employees and a total operating budget of more than $48 million. The library system has 6.19 million book and serial volumes as well as 4.23 million microform items and 1.11 million e-books. It subscribes to over 68,000 print serials and e-journals.