Oldest author to have first book published (female)

Oldest author to have first book published (female)
Who
Bertha Wood
What
100 year(s):day(s)
Where
United Kingdom ()
When
Bertha Wood (UK; b. 20 June 1905) had her first book, Fresh Air and Fun: The Story of a Blackpool Holiday Camp published on her 100th birthday on 20 June 2005. The book is based on her memoirs, which she began writing at the age of 90.