The illustration of the horse Cherry Bounce, one of Munnings's favourites, relates to stanza 31 of the poem:
'With one loud snort the frightened mare,
Her nostrils blown in full dilate,
Stood head and tail erect in air,
Then with a bound she cleared the gate!!'
(see A.J. Munnings, The Finish, Bungay, pp. 344-49).
Black Knight was a black pekinese which belonged to Violet, Lady Munnings. Lady Munnings adored the little dog and wrote it's memoirs Diary of a Freeman in which it diaried it's many adventures, including accompanying Violet to Buckingham Palace for Munnings's investiture (in a little black velvet evening bag), to a royal Garden Party and to a party before the wedding of Princess Elizabeth.
Even after his death in 1955 at the age of ten, Black Knight continued to accompany his mistress for she had him stuffed (see J. Goodman, What a Go!, London, 1988, pp. 246-47).