318949.1358 Chronocylcegraph. Not sure of what, though. Perhaps typing, with light on head and carriage return hand?
odd: label: General note
content: Category: typing study
label: General note
content: Gilbreth image: GL 704
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 2: Glass Stereo Slides (Positive) / 318949.1239 to 318949.1423
unitdate: label: Date
content: undated
container: label: Container
content: Box 9
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Negatives