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2. Union Pacific Big Boy - Wikipedia

   en.wikipedia.org/wiki/Union_Pacific_Big_Boy

   The Union Pacific Big Boy is a type of simple articulated 4-8-8-4 steam locomotive manufactured by the American Locomotive Company (ALCO) between 1941 and 1944 and operated by the Union Pacific Railroad in revenue service until 1962.

3. 1N4148 signal diode - Wikipedia

   en.wikipedia.org/wiki/1N4148_signal_diode

   Three 1N4148 diodes in glass DO-35 axial package. The black band on the right is the cathode side. Diode schematic symbol vs cathode marking on the package.. The 1N4148 is a standard silicon switching signal diode.

4. Union Pacific 4014 - Wikipedia

   en.wikipedia.org/wiki/Union_Pacific_4014

   Union Pacific 4014 is a preserved 4884-1 class 4-8-8-4 "Big Boy" type steam locomotive owned and operated by the Union Pacific (UP) as part of its heritage fleet.Built in November 1941 by the American Locomotive Company (ALCO) at its Schenectady Locomotive Works, it was assigned to haul heavy freight trains in the Wasatch mountain range.