Where to get archival storage boxes and enclosures in NZ
Port Nicholson Packaging in Petone:
http://www.pnp.co.nz/
Conservation supplies in Havelock North
http://www.conservationsupplies.co.nz/
General archiving information
The practical archivist blog has useful information about archiving and sorting your family photos and heritage items
http://practicalarchivist.com/
Both archives NZ and TePapa have information on their sites about sorting and looking after photographs
Useful references for dating photographs
For photographic processes http://www.graphicsatlas.org/
Also Gawain Weavers' site contains a very useful chart which you can use to help identify the photographic processes employed in 19th Century Photographic prints
http://gawainweaver.com/processID
For NZ photographers since 1840 - the photographic database link is:
http://www.aucklandcitylibraries.com/DigitalLibrary/resourcepages/photographersdatabase.aspx?RD=~/DigitalLibrary/topicpages/photography.aspx
RogerVaughan updated reference to this site
http://www.cartes.freeuk.com/dec/dated.htm
Some links on clothing styles and fashionshttp://www.cartes.freeuk.com/dec/dated.htm
http://www.fashion-era.com/Dating_Costume_History_Pictures/how_to_date_photographs_top.htm