John E. Dierkes, Panama Canal Zone negatives
setName: label: See more items in
content: Division of Mechanical and Civil Engineering Panama Canal Collection
unitdate: label: Date
content: 1909
container: label: Container
content: Box 1, Folder 2
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Negatives