To view larger images of all photos, click on the photo. Use the back button on your browser to return to the previous screen. DETROIT RIVER TUNNEL ELECTRICS CLASS ORIGINAL NUMBER 2ND NUMBER BUILDER/DATE RETIRED R-1 DRT 7500 160 ALCO-GE MAY 1910 DECEMBER 1953 R-1 DRT 7501 161 ALCO-GE FEBRUARY 1910 DECEMBER 1953 R-1 DRT 7502 162 ALCO-GE FEBRUARY 1910 DECEMBER 1953 R-1 DRT 7503 163 ALCO-GE FEBRUARY 1910 DECEMBER 1953 R-1 DRT 7504 164 ALCO-GE MAY 1910 MARCH 1953 R-1 DRT 7505 165 ALCO-GE MAY 1910 DECEMBER 1953 R-1a DRT 7506 166 ALCO-GE APRIL 1914 MAY 1953 R-1a DRT 7507 167 ALCO-GE MAY 1914 DECEMBER 1953 R-1a DRT 7508 168 ALCO-GE MAY 1914 DECEMBER 1953 R-1a DRT 7509 169 ALCO-GE JUNE 1914 DECEMBER 1953 R-1b DRT 7510 170 ALCO-GE MAY 1926 DECEMBER 1953 R-1b DRT 7511 171 ALCO-GE MAY 1926 APRIL 1953