In the 1970's Marvel Created their own Fly, Original called the Human Fly and later just the Fly.  The Art was by former MLJ artist Gill Kane

AMAZING SPIDER-MAN ANNUAL #10 (MARVEL COMICS) (1976) BATTLES THE FLY!!! This is issue #10 of The Amazing Spider-Man Annual! This issue's story is "STEP INTO MY PARLOR..." The Origin of the Human Fly, as Rick Deacon becomes the newest Villain to fight Spider-Man! Story by Len Wein and Bill Mantlo penciled by Gil Kane and inked by Frank Giacoia. Cover by Gil Kane and Mike Esposito

AMAZING SPIDER-MAN #192 (MARVEL COMICS) (MAY 1979) BATTLES THE FLY!!! This is issue #192 of The Amazing Spider-Man! This issue's story is "24 HOURS TILL DOOMSDAY!" Spider-Man and J. Jonah Jameson have been locked together, with a time bomb, thanks to old foe Spencer Smythe! They've got 24 hours to get rid of the bomb or it's good-bye! On top of that, The Fly shows up to fight it out with Spider-Man! Story by Marv Wolfman and art by Keith Pollard & Jim Mooney. Cover by Keith Pollard and Bob McLeod

AMAZING SPIDER-MAN #193(MARVEL COMICS) (JUNE 1979) BATTLES THE FLY!!! This is issue #193 of The Amazing Spider-Man! This issue's story is "THE WINGS OF THE FEARSOME FLY!" Spider-Man must stop The Fly from stealing King Tut's treasure! Story by Marv Wolfman and art by Keith Pollard & Jim Mooney. Cover by Keith Pollard and Bob McLeod

In the 1970's The Buyers Guide for Comic Fandom's Publisher took his favorite Golden Age Comics and with the assumption that the copyrights had expires began reprinting them in black and white. These were done as direct copies form the color originals so the gray tones were different then had they been done from the original pencil and ink artwork. However Alan was a Golden Age fan and he made these stories available at a reasonable price from his Dynapubs Company. 

Alan Light's Dynapubs: Flashback Reprints
Catalog 1974

Comic Buyers Guide (The Buyer's Guide for Comic Fandom) founder Alan Light reprinted classic golden age stories in Black & White with color covers in the early 70's

Flashback Special Edition Reprint #4
Special Comics #1
Winter 1942

Pencils and Inks: Paul Reinman
Cover: Harry Lucey

"Special Case No. 2"

color cover, black & white interior