Its main building, designed by Ralph Adams Cram and built in 1899–1902, and was a gift to the city from Pawtucket's first mayor, Frederic Clark Sayles, in memory of his recently deceased wife.

[5] Sanders was nationally recognized for her innovative services such as allowing open access to book stacks and permitting children to use the library.

[3][6] The Classical Revival building features ionic columns, a pediment, egg-and-dart moldings, with high relief panels on its wings.

"[7] Construction of the Pawtucket Post Office, on a trapezoidal site at the intersection of Summer and High streets, began in 1896 under the supervision of U.S. Treasury architects William Martin Aiken, and James Knox Taylor.

Built of red brick on a granite base, and with a domed tower, the Beaux-Arts inspired building was completed in November 1897.

[1][3] The tower entrance, now closed, is framed by granite Doric columns supporting an entablature, on top of which sit two stone eagles.