Harry Harrison and Brian W. Aldiss launched their series with a "Credo" by James Blish that snipes at the two extant year's best anthology series and suggests minimum standards for a better one. The result is far closer to Merril than to Wollheim/Carr, with numerous works from non-genre sources and the occasional poem or film review (of 2001). For once the titles reflect the contents: Best SF: 1967, published in 1968, contains stories first published in 1967. The first volume was a paperback original from Berkley Medallion, the next six hardcovers from Putnam's with paperback reprints from Berkley Medallion, and then came two final hardcovers from Bobbs Merril that never had US paperback editions. Each volume opens with an informal introduction by Harrison on changes in the field, and closes with a longer, incisive essay by Aldiss on the state of the literature.