Green's Catalog of Tuberculosis Seals of the World was completed in 1930, and between 1935 and 1937 was published as a series in The Western Stamp Collector, a stamp collecting weekly. The same electrotype images, supplied by the National Tuberculosis Association, were used in 1935 to illustrate the "Christmas Seal" section of The Scott Specialized Catalogue. It was a simpler time. The NTA encouraged hobbyists, and knew that cataloging Christmas Seals was good publicity, and recognized that every collection was a testament to their important work.