3 literature references for Bartramia baldwinii C. Müller, 1896:

Author: Crosby, M. R. and others - INSUFFICIENT
Year: 1999
Title: INSUFFICIENTLY known because not REVISED since its pre-1963 publication; that is to say we have no more information about the species than Index Muscorum; merely relisted without additional specimens in a checklist since 1963; may have been treated in
Source: Checklist Mosses
Author: C. Müller
Year: 1896
Title:
Source: Flora
Author: Miller, H. A., H. O. Whittier & B. A. Whittier
Year: 1978
Title: Prodromus florae muscorum Polynesiae, with a key to genera
Source: Bryophyt. Biblioth.