Splash page to the Iron Man story in TALES OF SUSPENSE #47 by Steve Ditko and Don Heck.
Page from the Giant-Man story in TALES to ASTONISH #49 by Jack Kirby and Don Heck
Stan Lee’s border notes read:
INVENTS CARTRIDGE BELT FOR CAPSULES
TRYING OUT BELT—
Page from the Captain America story in TALES OF SUSPENSE #80 by Jack Kirby and Don Heck.
You can see that the border in the second and third panels was shifted over about a quarter of an inch.
Cover to DAREDEVIL #100 by Rich Buckler and Frank Giacoia. Looks like there might be some Don Heck in there as well.
Cover to AVENGERS #40 by Don Heck.
You can see that a lot of the background has been whited out for the final cover—the original has a gleam coming from Sub-Mariner. Also, a bit of art was added all along the right side.
Page from AVENGERS #30 by Don Heck and Frank Giacoia
A few border notes remain:
SWINGS CRATE TO ABSORBS. SMASHES HAND INTO FLOOR…
There are also proofreading notes from Stan:
ADD A #.
CHECK - TELL DON & ROY ON ALL.
Page from AVENGERS #10 by Don Heck and Dick Ayers.
A few of heck’s border notes remain:
TYING LEGS TOGETHER
SNAPPING CORDS (word obscured) FLYING
STAY OUT OF IT WASP!
Also, you can see that Giant-Man’s thought balloon in the first panel was initially a speech balloon, and changed before printing.