Photographer unknown. Virtually identical image as no. 0890 in this digital collection, with different text.
Annotation on front: Cellar Dwellings. Pittsburg - Housing Conditions bottom To face P. 146
MP-51-57 Proof sheets for Vol. 1 "Tenement House Problems" De Forest & Veiller MP-51 Slum Dwellings Philadelphia - Typical Houses of Working men MP-52 Snow street scene MP-53 Better grade dwellings MP-54 A Bremen Street Barracks Cincinnati - Typical T enements MP-55 Cellar Dwellings Pittsburg - Housing Conditions MP-57 Providence Street Scene or alleyway