DC has a pair of potpourri style books with a bit of Ditko coming this fall, which may be worth picking up. The 52: THE COMPANION has a bunch of stories featuring characters who were in that crossover, so the classic Question story is there. The GREAT DISASTER thing looks like they're taking any 1960s and 1970s story that had a post-atomic catastrophe future and deciding that they're all the same post-atomic future. As far as I can figure the Ditko is just a pair of two-page shorts, both with Colletta inks. A lot of the other stuff seems interesting, though.
52: THE COMPANION TP
Writers: Steve Ditko, Greg Rucka, Gardner Fox, Grant Morrison, Steve Gerber, Mark Schultz, Jack Miller, Dan Jurgens, David Goyer and Geoff Johns
Artists: Steve Ditko, Kano & Stefano Gaudiano, Chaz Truog & Doug Hazlewood, Carmine Infantino, Walter Simonson, Doug Mahnke & Tom Nguyen, Murphy Anderson, Alex Toth, Dan Jurgens & Tom Dzon and Leonard Kirk & Keith Champagne
Collects: MYSTERIOUS SUSPENSE #1, GOTHAM CENTRAL #40, ANIMAL MAN #16, METAL MEN #45, SUPERMAN: THE MAN OF STEEL #97, RIP HUNTER: TIME MASTER #6, JSA #43-44, and stories from DETECTIVE COMICS #350, STRANGE ADVENTURES #226, SECRET ORIGINS #35.
$19.99 U.S., 224 pages
SHOWCASE PRESENTS: THE GREAT DISASTER FEATURING THE ATOMIC KNIGHTS TP
Writers: John Broome, Jack Kirby, Gerry Conway, David Michelinie, Cary Bates, Sheldon Mayer, David Kraft, Paul Levitz, Steve Skeates, Dan Mishkin, Gary Cohn, Len Wein, Robin Snyder, Mike Bentley, George Kashdan, Wyatt Gwyon, Paul Kupperberg, Roger McKenzie, Jack Oleck and Elliott S. Maggin
Artists: Murphy Anderson, Jack Kirby, José Luis García-López, Walter Simonson, Pablo Marcos, Mike Nasser, Alex Saviuk, Vicitan, Bill Draut, Alfredo Alcala, Jack Sparling, Rich Buckler, Howard Chaykin, A.B. Magpali, Howard Bender, J.M. Matucenio, Steve Ditko, Buddy Generale, Paul Kirchner, Jeff Aclin, Frank Miller, Alex Niño, Curt Swan, Danny Bulanadi, Wallace Wood, D. Bruce Berry, Andy Mushynsky, Frank McLaughlin, Bob Layton, Bob Smith, Steve Mitchell, Bob Oksner, Terry Austin, Joe Rubinstein, Vince Colletta, Tex Blaisdell, Bob Wiacek, and Danny Bulanadi
Collects: FIRST ISSUE SPECIAL #1, HERCULES UNBOUND #1-10, SUPERMAN #295, DC COMICS PRESENTS #57, and stories from KAMANDI #43-46, STRANGE ADVENTURES #117, 120, 123, 126, 129, 132, 135, 138, 141, 144, 147, 150, 153, 156 and 160, WEIRD WAR TALES #22, 23, 30, 32, 40, 42-44, 46-49, 51-53, 64, 68, 69 and 123, HOUSE OF MYSTERY #318, HOUSE OF SECRETS #86, 95, and 97, TALES OF THE UNEXPECTED #215 and 221, and THE AMAZING WORLD OF DC COMICS #12.
$16.99 U.S., 576 pages