I found the Dorchester photo again, it's on the NZ National Library site. This is an excellent site for MV photos - extensive collection, high quality images, powerful search functions, and you can even access the high res image and zoom in on detail. As opposed to AWM who want $40 for their high res images!
http://mp.natlib.govt.nz/detail/?id=...raphic+Archive
Scroll to bottom of page and click on "View Archived Image on NDHA"