This volume attempts what Chapman and Follansbee did for Mexico's postal district overprints of the 19th Century, except it deals with revenue issues of the 19th and 20th centuries. This work is presented in four volumes. Part One deals with Contribución Federal stamps of 1874-1929: Overprints for over 140 different districts: Everything from Acanceh to Zamora. Over 640 overprints fully illustrated. Different pricing for "with talon" vs. "without talon." Different pricing for complete vs. partial overprint. "Tipo de Impuesto" overprints covered 1923-1943. Overprints segregated by different fonts, different colors, different positions (reading up vs. reading down), and more! Prices in U.S. dollars and cents.It is hoped that even the casual collector will find some interest in these fascinating overprints. And for the specialist, there is a treasure trove.