I started with Henrietta's War by Joyce Dennys:
Henrietta, a doctor's wife in Devonshire, documents the mundanities and absurdities of life on the Homefront in letters to her childhood friend Robert. While similar in tone to Diary of a Provincial Lady, it was neither as funny nor as engaging, and even the quirky illustrations (by the author herself) couldn't quite redeem it.
More successful was Mrs Tim of the Regiment by D.E. Stevenson, author of Miss Buncle's Book:
Hester Christie (Mrs Tim) starts a diary in which she records her daily doings with all the wit and verve of my favorite Provincial Lady. While I think the book rather lost its way toward the end--the entire second half is taken up by diary entries for a single holiday in June--I still thoroughly enjoyed it.
And my faith in the series was further restored by Miss Hargreaves:
Norman and Henry invent a character, Miss Hargreaves, only to have her appear on their doorstep exactly as they imagined her. Things quickly spin out of control, as Miss Hargreaves gets Norman into one sticky situation after another, and what started as a light farce takes on a more sinister edge. A completely surreal, thoroughly engaging romp right to the end.
A Kid for Two Farthings by Wolf Mankowitz was a much quieter book:
Six-year-old Joe, growing up in London's Jewish community in the 50s, buys a unicorn (a little white goat) in the Whitechapel market, hoping one day the unicorn's stubby horn will grant the humble wishes of his friends and family. This beautifully observed slice of life was warm and tender without being overly sentimental. Simply perfect.
Four down, two to go!