Herbert Otto Roth (1917-1994) socialist, historian, and former Deputy University Librarian at the University of Auckland, Roth wrote several publications on New Zealand trade union history including Trade unions in New Zealand past and present (1973).
Bert Roth papers. 1971-1973. MSS & Archives A-301. Special Collections, University of Auckland Libraries and Learning Services. https://archives.library.auckland.ac.nz/repositories/2/resources/187 Accessed June 01, 2020.