Read: by October 1923.
Uncertain: the inscription indicates that Beckett's older brother first acquired and used this book. It is safe to speculate that it is this copy that Beckett consulted for the Junior Exhibition, despite the lack of reading traces. The only doubt that can be raised concerns Beckett's tone when on 5 January 1933 he writes to Thomas MacGreevy about reading Green: "I've been reading nothing but a little history (Greene! [for Green], his libel on poor Charles 2. The royal mumper!" (LSB I 150). The passing mention of the book combined with the spelling mistake point rather to a first reading than to a re-reading.
A Short History of the English People
London: Macmillan, 1920 
rev. and enlarged ed.
Inscription: 'F.E. Beckett / July 1920'
cover, inscription, tp.