Bibliography

Scott Numbers are from: 2013 Scott Specialized Catalogue of United States stamps and covers of the world. Scott Publishing Co. Sidney, OH: 1016-1017.
Yacano, Bob and Angela. 2011. Postal History of the Philippine Republic, 1897-1901 Philatelic Monograph, self-published. 41-88.
Arnold H. Warren. 1941. Unpublished Studies on Philippine Revenues. Chapter 7 (http://www.philippinephilatelist.net/Reading/Revenues/warren/chapter1/Preface.html last accessed July 19, 2013)
Lehmann, Douglas K. 2006, The Tax System of Aguinaldo’s Revolutionary Government.
Philippine Philatelic Journal. Vol. 28, No.4: 24-32.
Lagerloef, Col. Hans. 1943. “Unusual Aguinaldos in One of the Most Theatrical and Interesting Interludes in the History of the Philippine Islands.” The Stamp Specialist Green Book ed. H.L. Lindquist. p. 51-64
Hurt, E. F. “Philippine Partisan Posts”. The American Philatelist. Vol. 61 No. 8-9, 1948.

Col. Hans Lagerloef Specialized Collection of The Aguinaldo Revolutionary Stamps