Portrait of five men [unidentified]

Notes:
Can't figure out who these men are.
Data Provider:
University of Michigan. Libraries
Collection:
Art, Architecture and Engineering Library, Lantern Slide Collection
Place:
South Africa
Subject Topic:
Portraits
Language:
UND
Rights:
http://quod.lib.umich.edu/t/text/accesspolicy.html
URL:
http://name.umdl.umich.edu/IC-UMMU2IC-X-LS022029%5DLS022029