National Geographic. 40 years, 1973 - 2012, nearly complete for regular issues (455 of 480, each y. 12). Missing: VI/76 -IV,VIII, XII/77- I/78- I/79- V,XI,XII/81- I,II,III,IV/82- X/88- V/89 -X/91 -I/92 -VI/94 - IV/06 - X/07 - XI/09 -IX,X,XI,XII/12