The conservation team continues to document and treat the ledgers in the Bank of North America collection. The nature of our work requires careful examination of the books' physical structure, which will affect the individual treatment to be carried out. This presented us with a great opportunity to compare many binding styles and glean insights into Philadelphia's stationery trade. We've photographed the over 670 ledgers in the collection and have found that the bank made use of the services of at least a dozen different stationers over the years.