1980.0785.175 Pure chronocyclegraph. A square has been drawn with a ball-point pen on the left photograph.
odd: label: General note
content: Category: misc./pure cyclegraphs or unidentified study
label: General note
content: Copy negative: 99-30071
label: General note
content: Gilbreth image: G18-G63
label: General note
content: Information on photo: G18-G63
name: label: Collection Creator
content: Perkins, James Secor
label: Collection Creator
content: Gilbreth, Frank Bunker, 1868-1924
label: Collection Creator
content: Gilbreth, Lillian Moller, 1878-1972
setName: label: See more items in
content: Frank and Lillian Gilbreth Collection
label: See more items in
content: Frank and Lillian Gilbreth Collection / Series 5: Stereograph Cards
unitdate: label: Date
content: undated
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials