25931 records — Page 689 of 2594
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Dates:
undated
Level:
file
Collection ID:
NMAH.AC.1113
Repository:
Archives Center, National Museum of American History
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Creators:
Mechanical and Civil Engineering, Division of [former name], NMAH, SI.
History of Technology, Division of, NMAH, SI
Modjeski and Masters
Dates:
1870-1979
bulk 1900-1940
Size:
60 Cubic feet (139 boxes)
Collection ID:
NMAH.AC.0976
Repository:
Archives Center, National Museum of American History

The records document the work of consulting engineers and bridge builders, Ralph Modjeski (1861-1940) and Frank Masters (1883-1974) of Harrisburg, Pennsylvania.

Found In
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Dates:
1902
Level:
file
Collection ID:
NMAH.AC.1113
Repository:
Archives Center, National Museum of American History
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Dates:
undated
Level:
file
Collection ID:
NMAH.AC.1113
Repository:
Archives Center, National Museum of American History
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Dates:
1919
Level:
file
Collection ID:
NMAH.AC.1113
Repository:
Archives Center, National Museum of American History
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Dates:
1923
Level:
file
Collection ID:
NMAH.AC.1113
Repository:
Archives Center, National Museum of American History
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Dates:
1925
Level:
file
Collection ID:
NMAH.AC.1113
Repository:
Archives Center, National Museum of American History
25931 records — Page 689 of 2594