[1] Though he wrote hundreds of articles or books, Wroth was also a librarian and research professor.

The content and finish of the completed books, pamphlets, and papers of the period are also discussed.

The book lover, more richly endowed, broods over the hand that fashioned the volume he reads, and, like the Tramp-Royal, he goes on until he dies observing the different ways that different things are done, the materials, the processes, the how and what and why of the ancient mysteries of printing, paper making, type founding, ink making, press building, and binding.

"[4][5] In his publications on printing in colonial America, Wroth notably included the history of colonial women printers, such as Dinah Nuthead, Anne Catherine Hoof Green, Sarah Updike Goddard, Clementina Rind, and Mary Goddard.

While at Brown University in Providence, Rhode Island, Wroth served as librarian of the John Carter Brown Library for 35 years (1924 — 1957), and held a university post as Research Professor of American History (1932–1965).