Harbor in Willebroek by Boom
| Object type | Drawing |
| Genre | Village, Town and Cityscape |
| Dimensions | 16 x 27.9 cm |
| Support | Paper |
| Medium | Pen and brown ink, brown and blue wash, over graphite |
| Further inscription | Watermark (not described) |
| Other authorities | Bailey/Walker cat. #BRAU.HA.4 |
| Location | Braunschweig, Germany |
| Collection | Herzog Anton Ulrich Museum (Kupferstichkabinett) |
| Accession numbers | Z 2363 |
| External resources | Kulturerbe Niedersachsen |