Marvel Comics turns 80 in August. To celebrate, the company is releasing Marvel Comics No. 1000, which follows its heroes from Day 1 in 1939, long before they became the global entertainment phenomenon they are today.

Each page of the comic will correlate to one year in Marvel history. Along the way, readers will see many of the marquee characters from the mighty Marvel universe like Captain America, Thor and Iron Man, and some less familiar ones, like Blue Marvel, Night Thrasher and the Three X’s.

“This is by far the most complex and complicated and difficult book I’ve ever had to assemble,” Tom Brevoort, Marvel’s executive editor and senior vice president of publishing, said in a conference call with C.B. Cebulski, Marvel’s editor in chief. While most comic books are created by one writer and one art team, Issue No. 1000 will have 80 — one team for each of its 80 pages.

The company began teasing the project in issues that arrived in stores this week: Comics on Wednesday featured advertisements with one, two or three names, along with the words “August 2019” against a background collage of historic Marvel covers. There was a lot of buzz among fans.