Donaldson is a prolific writer who has the rare distinction of being a very strong IM, an author of theoretical works, and a leading chess historian. This book, which I have only glanced through, is his latest in a line of original historical pieces. Edmars Zengalis was born in Riga in 1923, played consistently in the 1940s and early 1950s, and retired from international play when he moved to the U.S. and became a professor of mathematics. Donaldson makes the case that Zengalis could have been given a grandmaster title with more justification than others who have been awarded them. Zengalis' games are annotated and his career is summarized. This is primarily a book for chess historians and collectors, but anyone can enjoy it. [John Donaldson is the Chess Director of the Mechanics Institute Chess Club (http://www.chessclub.org/)]