Building Addition and Alterations, Philadelphia, 1944-1946: First floor plan showing ultimate development (1/8" =1'-0")

Photomechanical print in ink with colored pencil on paper

Photomechanical print with colored pencil on paper

Photomechanical print in ink with colored pencil on paper

Photomechanical print with graphite on paper

Photomechanical print in brown ink on paper

Photomechanical print with graphite on paper

Photomechanical print printed in black