Quantity 11 volumes. A diverse collection gathered into an artificial series in random order. Bignell's papers, 1865-1961. Quantity 0.3 linear metres. The series includes a significant number of reports on harbour development, and printed reports on observations concerning the Whanganui River and harbour dating back to 1865.
Arrangement is random.
Harbour engineer and pilot reports, 1865-1963. Quantity 3.3 linear metres. Reports to the Board on engineering matters, and pilot reports from 1913. Harbour Engineer's files, 1905-1970. Quantity 1.3 linear metres.