Vintage LEGO 4.5V Train 7722 Battery Train Set from 1985 Steam Cargo - YouTube
LEGO 7722 Steam Cargo Train Set | BrickEconomy
LEGO Steam Cargo Train Set 7722 - YouTube
LEGO 7722: Steam Cargo Train Set | Brickset: LEGO set guide and database
Train Battery Box Car with Red Switch and Black Wheels with 'DB 7722' and Weight Table Pattern on Both Sides (Stickers) - Set 7722 (Undetermined Type) : Part x488c02pb01 | BrickLink
LEGO MOC 7722 NG - Powered Up tender & freewheel locomotive mod by CoolHand505 | Rebrickable - Build with LEGO