Recreational Mathematics Magazine (RMM) was published in 1961 through early 1964 with 14 issues appearing. The editor and publisher was Joseph S. Madachy and he later went on to edit Journal of Recreational Mathematics (JRM) for several decades. The most popular feature of RMM was the regular alphametics section, a column that was continued throughout the run of JRM. This book is a republication of the alphametics that appeared in RMM along with the solutions. An alphametic is where a simple arithmetic problem has the digits replaced by letters where the result is a sensible message.