I have the 1968 Dover edition which is an unabridged and corrected republication of the original published in 1938. The majority of the corrections are of the typographical type and the rest are 'cooks' (endings shown to be in error) that are corrected in the Dover edition. This book is similar to Fine's "Basic Chess Endings" although not as detailed. As the title suggests, most of the studies are compositions by various composers between 1893-1935, although there are a few positions that were taken from games played in that same time period. The studies are arranged in classifications ranging from pawns-only to the various combinations of pieces. This book is not 'dry' reading like Fine's BCE since any one of the positions in this book could be encountered in a game. I found this book to be an enjoyable way to learn endgames since the positions are similar to those I have encountered in my games. I would recommend this book for players rated B-class (1600-1700) and above.