Here is a Lionel 6-9749 O Gauge Penn Central Boxcar #9749 from 1975

This is an Atlas 70000035 HO Code 100 Plate Girder Bridge - P&W

Model Number: 201004

Starting in the 1920s

This is a American Model Builders 388 HO Scale 13 Lever Interlocking Machine Kit

Piko 35015 G 22V / 5A Digital Booster ProductID_12157154 Here is a Lionel 6-9749This is a Piko 35015 G Digital Booster 22V 5A. Provides up to 5 amps of DCC power output at up to 27V NMRA DCC track voltage. For use together with a 35010 Digital Central Station and up to three other 35015 Digital Boosters to provide more power for larger layouts. Requires a separate DC transformer to provide operating power. The 35020 Transformer (120V 20V DC 6A) is recommended. Maximum input: 20V DC. NOT for use with AC transformers. NOT for use