Items
Item Number Date Description
U-025 More info . . . U-025 ca. 1890s Moveable dam in place at west end of St. Marys River Canal
U-026 More info . . . U-026 ca. 1890s Unidentified view of construction in the lock pit of the Poe Lock
U-027 More info . . . U-027 ca. 1890s Unidentified view of construction in the lock pit of the Poe Lock
U-028 More info . . . U-028 ca. 1890s Unidentified view of construction in the lock pit of the Poe Lock
U-029 More info . . . U-029 ca. 1890s Unidentified view of construction in the lock pit of the Poe Lock
U-030 More info . . . U-030 ca. 1890s Unidentified view of construction in the lock pit of the Poe Lock
U-031 More info . . . U-031 ca. 1890s Unidentified view of construction in the lock pit of the Poe Lock
U-032 More info . . . U-032 April 1936 Sweep Pontoon No. 1, U.S. Engineer Office, Detroit, Michigan
U-033 More info . . . U-033 10 September 1924 U.S. Government sweep pontoon, P. M. No. 4
U-034 More info . . . U-034 1917 Improving St. Marys River, Michigan, Fourth Lock: Drawing No. 1033 - Operating machinery, Pressure pumping plant, west end of lock, Engine Shelter 2 S
U-035 More info . . . U-035 1917 Improving St. Marys River, Michigan, Fourth Lock: Drawing No. 1032 - Operating machinery, Pressure pumping plant, west end of lock, Engine Shelter 4 S
U-036 More info . . . U-036 1917 Improving St. Marys River, Michigan, Fourth Lock: Drawing No. 1035 - Operating machinery, valve and frame for equalizing culvert
U-037 More info . . . U-037 1917 Improving St. Marys River, Michigan, Fourth Lock: Drawing No. 1041 - Operating machinery, pressure piping for valve engines, plan and elevation in upper valve pit
U-038 More info . . . U-038 1917 Improving St. Marys River, Michigan, Fourth Lock: Drawing No. 1042 - Operating machinery, pressure piping for valve engines, plan and elevation in lower valve pit
U-039 More info . . . U-039 1917 Improving St. Marys River, Michigan, Fourth Lock: Drawing No. 1250 - Operating machinery, details of hydraulic accumulator for operation of butterfly valves
Showing 1696 to 1710 of 1780 items