Registers of bonds issued under provision of acts for internal improvements. Entries are listed in three columns indicating the coupon number, amount, and when paid. Many pages are inscribed with the date the bond was cancelled and stock issued. Of interest is an interleaved copy of an undated letter of indemnification, releasing Maryland from any future costs relating to the coupons, from Baring Brothers of London. Many volumes concern the Baltimore & Ohio Railroad, Chesapeake & Ohio Canal, and Susquehanna & Tidewater Canal. Arranged by bond number.