Waikato Region:
Waikato Regional Council have an interactive map with a list of all the kahikatea remnants you can visit:
http://www.waikatoregion.govt.nz/Environment/Natural-resources/Biodiversity/Forest-fragments/Kahikatea-forest-fragments/Some-kahikatea-fragments-you-can-visit/#Bookmark_Matamata
Yarndley's Bush:
http://www.waipadc.govt.nz/NR/rdonlyres/76E5A974-71A0-4A73-A653-DCAC186A8526/74818/YarndleysBushFINAL.pdf
more on the history of Yarndley's Bush:
http://www.kiwanis.org.nz/taweyard.htm
Barrett Bush:
http://www.doc.govt.nz/getting-involved/volunteer-join-or-start-a-project/join-a-group/waikato/friends-of-barrett-bush/
more on the history of Barrett Bush:
http://www.envirocentre.org.nz/110/barrett_bush/
http://www.waikatoregion.govt.nz/Environment/Natural-resources/Biodiversity/Forest-fragments/Kahikatea-forest-fragments/Some-kahikatea-fragments-you-can-visit/#Bookmark_Matamata
Yarndley's Bush:
http://www.waipadc.govt.nz/NR/rdonlyres/76E5A974-71A0-4A73-A653-DCAC186A8526/74818/YarndleysBushFINAL.pdf
more on the history of Yarndley's Bush:
http://www.kiwanis.org.nz/taweyard.htm
Barrett Bush:
http://www.doc.govt.nz/getting-involved/volunteer-join-or-start-a-project/join-a-group/waikato/friends-of-barrett-bush/
more on the history of Barrett Bush:
http://www.envirocentre.org.nz/110/barrett_bush/