Image | Item No. | Description |
| 1591-2 (Inv) | Small Bucket 32 Parts, 2 Minifigures, 1991 Catalog: Sets: DUPLO: Basic Set |
| 1635-1 (Inv) | Fire Dispatch 16 Parts, 2 Minifigures, 1991 Catalog: Sets: DUPLO: DUPLO, Town: Fire |
| 2303-1 (Inv) | Building Plates 2 Parts, 1991 Catalog: Sets: DUPLO: Supplemental |
| 2306-1 (Inv) | Large Building Plate 1 Part, 1991 Catalog: Sets: DUPLO: Supplemental |
| 2313-1 (Inv) | Supplementary Set 29 Parts, 1991 Catalog: Sets: DUPLO: Basic Set |
| 2314-1 (Inv) | Large Supplementary Set 38 Parts, 1991 Catalog: Sets: DUPLO: Basic Set |
| 2331-1 (Inv) | Barney, The Skateboard Bear 8 Parts, 1991 Catalog: Sets: DUPLO: Basic Set |
| 2341-1 (Inv) | Peter's Holiday Building Set 15 Parts, 1 Minifigure, 1991 Catalog: Sets: DUPLO: Basic Set |
| 2361-1 (Inv) | PreSchool Basic Building Set 23 Parts, 1991 Catalog: Sets: DUPLO: Basic Set |
| 2371-1 (Inv) | Flying School 34 Parts, 3 Minifigures, 1991 Catalog: Sets: DUPLO: Basic Set |
| 2376-1 (Inv) | Play Bucket 36 Parts, 1991 Catalog: Sets: DUPLO: Basic Set |
| 2381-1 (Inv) | Small Bucket 64 Parts, 1 Minifigure, 1991 Catalog: Sets: DUPLO: Basic Set |
| 2386-1 (Inv) | Large Bucket 50 Parts, 3 Minifigures, 1991 Catalog: Sets: DUPLO: Basic Set |
| 2392-1 (Inv) | Farmyard 60 Parts, 3 Minifigures, 1991 Catalog: Sets: DUPLO: DUPLO, Town: Farm |
| 2443-1 (Inv) | Lil' Skipper 5 Parts, 1 Minifigure, 1991 Catalog: Sets: DUPLO: DUPLO, Town: Harbor |
| 2459-1 (Inv) | Express Train 23 Parts, 3 Minifigures, 1991 Catalog: Sets: DUPLO: DUPLO, Train |
| 2660-1 (Inv) | Zoo Nursery (Zoo Babies) 5 Parts, 1991 Catalog: Sets: DUPLO: DUPLO, Town: Zoo |
| 2671-1 (Inv) | Racing Team 7 Parts, 2 Minifigures, 1991 Catalog: Sets: DUPLO: DUPLO, Town: Race |