White Ace Album for U.S. Commemorative Stamps - Simplified

Beginning with 1998, White Ace began publication of a 'Simplified' edition of the Commemorative Album for U.S. Stamps. This simplified format provides space for all stamps issued, but with the setenant issues only the block or pane are required. The comprehensive album calls for the block plus the stamps in the block as singes, thus duplicating the contents of the album.