Image Item No. Description  108-1 (Inv)  Battery Box 1 Part, 1976 Catalog: Sets: Train: Supplemental: 4.5V  156-2 (Inv)  Straight Track 25 Parts, 1976 Catalog: Sets: Train: Supplemental: 4.5V  157-1 (Inv)  Curved Track 25 Parts, 1976 Catalog: Sets: Train: Supplemental: 4.5V  159-1 (Inv)  Crossover, Straight Rails 25 Parts, 1976 Catalog: Sets: Train: Supplemental: 4.5V