Unofficial LEGO Sets/Parts Collectors Guide - 6 of 6 - LEGO ESSO Service Station 1310 (1956-58) and 310 (1957-66) sets. Esso was the longest running Town Plan set, and came in 6
LEGO System: ESSO Filling Station (310-5) for sale online | eBay
LEGO 310-3 Tug Set Parts Inventory and Instructions - LEGO Reference Guide
ESSO Filling Station : Set 310-5 | BrickLink
LEGO Set 310-1 Motorized Truck Set (1969 System > Samsonite) | Rebrickable - Build with LEGO