This is the first in a series of six kits that the U.S. Postal Service (USPS) is publishing to help teach through stamps the history of the 20th-century and the people, places, and events that have shaped our nation during the past 100 years. Each kit is designed to be taught as a complete and independent unit. This kit, featuring the 1970s, contains: (1) 10 Teacher's Lesson Cards; (2) a Resource Guide; (3) 30 topic cards; (4) Student magazine; (5) a poster; and (6) assorted other materials for balloting and storage. The 10 lesson topics include: (1) "'Celebrate the Century' Vote"; (2) "A Circle Vote"; (3) "Earth Day Every Day"; (4) "Puppet Theater"; (5) "Voice of the Decade"; (6) "Paint by Numbers"; (7) "Understanding Technology"; (8) "Tree of Prejudice, Tree of Freedom"; (9)"Secret Stamp Talk"; and (10) "Fun in the Seventies." Kits are distributed in a kit storage box, with multiple copies of some materials. On the basis of the ballots, the USPS intends to issue a limited edition of 15 commemorative stamps celebrating each decade of the 20th Century. (JH)