Maybe "Whaling in early New Zealand", by A W Reed, 1960.

Worldcat.org has this book showing in the listings. Whaling in Early New Zealand is in an academic library at the U of Hawaii at Manoa, and at several New Zealand libraries. You can probably view this free, (as a test I did the search on a browser that isn't set up with the Worldcat account or password). To get into the system to request from a library you may have to set up a free account or go to a library and do the search from there; this is a wonderful resource for obscure books and journals.