References
- Hovgaard , William . 1930 . A model of the Christianus Quintus, first three-decker in the Danish Navy 16 pp. with 7 illus. Nautical Museum, M.I.T., Cambridge (Massachusetts)
- The Clark collection of marine prints at the Pratt School of Naval Architecture 16 pp. and 8 illus. Nautical Museum, M.I.T., Cambridge (Massachusetts)