Wetzell Rolf. Chess Master ... at Any Age

Davenport: Thinker's Press, 1994. — 324 p. — ISBN13: 978-0-938650-58-0.How one man, tired of languishing in the ditch of chess, rose above it and became a master, after 50! -3rd printing. Reaching a plateau of chess strength after many years of playing, Rolf Wetzell devised new and unusual methods of study. These methods propelled him through several USCF rating classes to achieve his life-long ambition of becoming a chess master.