Ray Desmond: Dictionary of British and Irish Botanists etc.edit
Desmond, Ray & Ellwood, Christine (1997), "Watt, Hugh Boyd (1858-1941)", Dictionary of British and Irish Botanists and Horticulturists, London: Taylor & Francis and the Natural History Museum, p. 724, ISBN978-0-85066-843-8, retrieved 2023-05-06
Armstrong, Patrick (2000). The English Parson-naturalist: A Companionship Between Science and Religion. Leominster: Gracewing. ISBN978-0-85244-516-7. (some pages via Google Books)
read this post about free access to a lot of 19th century newspapers in England from the British Newspaper Archive. Of course we did already have free access to very much Dutch sources via Delpher! --Dick Bos (talk) 07:41, 13 August 2021 (UTC)
Bean, William Jackson (1976) – Trees & Shrubs, Hardy in the British Isles (8th Edition, 2nd Impression; Published in collaboration with The Royal Horticultural Society by John Murray Publishers Ltd, London) – 4 vols. + suppl (1976 – 1988).
vol. I: A - C, ISBN 0 7195 1790 7
vol. II: D - M, ISBN 0 7195 2256 0
vol. III: N - Rh, ISBN 0 7195 2427 x
vol. IV: Ri - Z, ISBN 0 7195 2428 8
suppl., ISBN 0 7195 4443 2
Krüssmann, Gerd (1984) – Manual of Cultivated Broad-leaved Trees & Shrubs (Timber Press, Beaverton, Or. - USA) – 3 vols. (1984 - 1986). English translation of: Krüssmann (1976) – Handbuch der Laubgehölze (Verlag Paul Parey, Berlin und Hamburg). Translation by Michael E. Epp.
vol. I: Abelia - Duranta, ISBN 0 7134 4601 3
vol. II: Eccremocarpus - Protea, ISBN 0 88192 005 3
vol. III: Prunus - Ziziphus, ISBN 0 88192 006 1
Each vol. has an alphabetical reference to the botanical terminology in five languages (English, Latin, German, French and Dutch).
Collier, Gordon (2008) – New Zealand Gardens of Significance – Guidebook. Publ. by The New Zealand Gardens Trust, Warkworth New Zealand. ISBN 978 1 86967 091 7
remark: WorldCat says: 2007, but my copy says 2008
Friar, Jillian and Denis (1996) - New Zealand Gardens Open to Visit.Publ. by Hodder Moa Beckett Publishers Ltd, Auckland New Zealand. ISBN 1 86958 343 4
History, topography &c. of New Zealand / Aotearoaedit
Marshall, Bruce & Robin Startup (1984) - From the Bay to the Bush : The People, Post Offices, and Postmarks of Hawkes Bay : The Postal History of Hawkes Bay. Published by the Jubilex '84 Committee of the Hawkes Bay Philatelic Society, Greenmeadows, Hawkes Bay NZ
Gisborne / Tūranga-nui-a-Kiwa & East Coast / Tairawhitiedit
Morrison, R. Bruce (2011) - Hill Country Mails : The Post Office Story of Gisborne, New Zealand : A History of Gisborne - East Coast Post Offices from Cape Runaway to the Whareratas. Handbook no. 77 of the Postal History Society of New Zealand Inc., Newmarket, Auckland NZ. ISBN 978 0 908588 84 8. ISSN0113-1079 (in HBWilliams Memorial Library Gisborne 383.499344)