With no citations or bibliography, this book leaves something to be desired. It weakens toward the end, as the author drifts into her own memories of games played with flowers.
However, it was first published in 1899--making it a first-hand account when discussing 19th century children's games. The number of illustrations and quotations show the amount of work that went into it.
My favorite quote, from the start of chapter VI School Books:
"The most worthless book of a bygone day is a record worthy of preservation... --A. de Morgan, 1847"
Somehow I don't think the author intended that to refer to her book one day. Not fabulous scholarship, so-so writing, way too much opinion, but a fascinating set of illustrations and descriptions of rhymes, schools, and the games of boys and girls. Some of which are, indeed, quite familiar.