25931 records — Page 1669 of 2594
[ ]
Collapse
[ ]
Expand
Dates:
1920-1928
Level:
file
Collection ID:
NMAH.AC.1074
Repository:
Archives Center, National Museum of American History

Some drawings deal with spring frogs, railroad switches that allow railway train cars to be guided from one track to another.

[ ]
Collapse
[ ]
Expand
Dates:
1902-1915
Level:
file
Collection ID:
NMAH.AC.1074
Repository:
Archives Center, National Museum of American History
[ ]
Collapse
[ ]
Expand
Dates:
1914-1929
Level:
file
Collection ID:
NMAH.AC.1074
Repository:
Archives Center, National Museum of American History
[ ]
Collapse
[ ]
Expand
Dates:
1911, 1917
Level:
file
Collection ID:
NMAH.AC.1074
Repository:
Archives Center, National Museum of American History
[ ]
Collapse
[ ]
Expand
Level:
file
Collection ID:
NMAH.AC.1074
Repository:
Archives Center, National Museum of American History

Indices to drawings A1-A169; A6-A260; and B9-B1026.

[ ]
Collapse
[ ]
Expand
Dates:
undated
Level:
file
Collection ID:
NMAH.AC.1074
Repository:
Archives Center, National Museum of American History
[ ]
Collapse
[ ]
Expand
Dates:
circa 1855
Level:
file
Collection ID:
NMAH.AC.1074
Repository:
Archives Center, National Museum of American History
[ ]
Collapse
[ ]
Expand
Dates:
undated
Level:
file
Collection ID:
NMAH.AC.1074
Repository:
Archives Center, National Museum of American History
[ ]
Collapse
[ ]
Expand
Dates:
1901
Level:
file
Collection ID:
NMAH.AC.1074
Repository:
Archives Center, National Museum of American History
[ ]
Collapse
[ ]
Expand
Dates:
1901
Level:
file
Collection ID:
NMAH.AC.1074
Repository:
Archives Center, National Museum of American History
25931 records — Page 1669 of 2594