D-101 ALCO DL-640
D-102 ALCO DL-600B
D-103 ALCO HH-600
D-104 ALCO C-630 Low Hood
D-106 ALCO RS-1
D-105 ALCO C-855 B
D-107 ALCO C-855 A
D-108 ALCO DL-701
D-109 ALCO FA-1
D-110 ALCO C-420 Low Hood
D-111 ALCO C-643DH
D-112 ALCO DL-440
D-113 GE U25B
D-114 ALCO DL-600B High Hood
D-115 ALCO C-420 High Hood
D-116 ALCO S-1
D-117 ALCO C-630 High Hood
D-118 ALCO DL-721 -KMT Japan
D-118 ALCO DL-721 -Korea
D-119 BLW RF-16
D-119B BLW RF-16 B-Unit
D-120 FM Erie Built
D-120A BP-20
D-121 ALCO RSD-4/5
D-122 FM Erie Built -Style #2
D-123 ALCO RS-3
D-124 ALCO DL-702
D-124H ALCO DL-702 High Hood
D-125 BLW RT-624
D-126 GE U36B
D-127 MLW RS-18
D-128 GE U28CG
D-129 ALCO S-2
D-130 EMD SD-45
D-131 GE U30CG
D-132 ALCO RS-2
D-133 GE U23B
D-134 GE U-50C
D-135 ALCO C-425
D-137 GE U33C
D-138 ALCO C-628 Low Hood
D-139 ALCO C-628 High Hood
D-140 EMD SW-1
D-141 ALCO C-636
D-142 EMD SD-40
D-142 HB EMD SD-40 High Hood
D-142 LB EMD SD-40L
D-143 EMD GP-40
D-143 HB EMD GP-40 High Hood
D-143L EMD GP-40 Dynamic Brakes
D-144 ALCO C-430
D-145 FM CFA-16-4
D-146 LIMA 1200hp
D-147 GE 44-Ton
D-148 EMD NW-2
D-149 EMD DD40X
D-150 GE 1-30 Gas Turbine
D-151 EMD SW-1500
D-152 EMD E-7
D-153 FM CPA-24-5
D-154 ALCO S-3
D-155 ALCO S-5
D-156 EMD SD45T-2
D-159 EMD SW-10
D-165 ALCO S-4
D-166 EMD SD40-2 UP
D-169 GE Steam Turbine #1
EMD SD40-2
D-176 EMD DD-35A
D-177 EMD DD-35B
D-178 EMD GP-30 Low Hood
D-179 EMD GP-30B
D-182 EMD 'SC' Winton 600 hp
D-186 GP38-2
Sources and Links

Above is a May 1970 advertisement from ALCO Models.

Union Pacific was not the only buyer of twin-diesel monster locomotives. The Southern Pacific rostered a few of its own. ALCO produced a trio of DH643 or Century 643 diesels in 1964 for SP.