Examination of the telegraphic apparatus and the processes in telegraphy
name: label: Collection Creator
content: Field, Cyrus
setName: label: See more items in
content: Cyrus W. Field Papers
label: See more items in
content: Cyrus W. Field Papers / Series 4: Publications
unitdate: label: Date
content: 1869 - 1869
container: label: Container
content: Box 4, Folder 14
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials