Triangle: The Currents of Space, Pebble in the Sky, The Stars Like Dust

First edition. Book club edition, which predated the publisher's edition. Dust jacket is darkening with age, and has some stains and soiling; now in new removable protective cover. Lime green boards with dark green print on the spine. Front hinge starting with webbing showing. First two blank pages show mild dampstain at bottom edge. Small dampstain, bottom corner rear end paper. Doubleday / Science Fiction Book Club hard cover with dust jacket, 1961 edition, first printing May 1961 (Print code C13), 516 pages. Cover by Alex Gotfryd. 8vo (5.75" x 8.5") According to SF expert Currey: "Code C13 on page 516 of both the trade and SFBC issues. Both produced from the same print run, but the BCE was released as a May 1961 selection while the trade issue was published 2 June." Omnibus edition of three novels originally published separately, 1951 - 1952: The Currents of Space, Pebble in the Sky (2nd place, 2001 Retro-Hugo for best novel of 1951), and The Stars, Like Dust.