Double sided postcard invite to celebrate the publication of Volume One, Number One, of "Seven Days, America's first mass-circulation, alternative newsmagazine" on Wednesday, January 12, 1977. Includes list of editors / contributors, Robert Boehm, Ralph DiGia, E.L. Doctorow, Jules Feiffer, Frances FitzGerald, Seymour Hersh, Jane Lazarre, Julius Lester, Lucy Lippard, Merle Miller, George Pillsbury, Muriel Rukeyser, and Cora Weiss.