What Philately TeachesJOHN N. LUFFReading editionChapter navigation3 reading sectionsGo to chapterChoose a chapter…What Philately TeachesJOHN N. LUFFWhat Philately TeachesPrevious chapter ←What Philately TeachesNext chapter →What Philately TeachesAll chapters and sections (3)What Philately TeachesJOHN N. LUFFWhat Philately TeachesNEW YORK. Third Edition1915← What Philately TeachesWhat Philately Teaches →