Here are the panels with the official members of the Avengers (from 1963 to 1999), in the order they joined the group.
I included 2 Iron Man since he joined the group with the golden armor and later started using the classic armor. I left out the other armors because they are not as iconic as these two.
I considered the characters based on their identities, even if they are the same person, as is the case of Hank Pym who had 4 different identities (Ant-Man, Giant-Man, Goliath and Yellowjacket) and Clint Barton (Hawkeye and Goliath). Here is the list of official dates of entry into the Avengers:
Ant-Man (1963)
Wasp (1963)
Iron Man - Golden Armor (1963)
Thor (1963)
Hulk (1963)
Captain America (1964)
Giant-Man (1965)
Hawkeye (1965)
Scarlet Witch (1965)
Quicksilver (1965)
Goliath - Hank Pym (1966)
Iron Man - Classic Armor (1966)
Hercules (1967)
Yellowjacket - Hank Pym (1968)
Black Panther (1968)
Vision (1968)
Goliath - Clint Barton (1969)
Black Knight (1969)
Black Widow (1973)
Swordsman (1973)
Mantis (1975)
Two-Gun Kid (1975)
Beast (1976)
Moondragon (1976)
Hellat (1976)
Ms. Marvel (1979)
Falcon (1979)
Wonder Man (1980)
Tigra (1981)
She-Hulk (1982)
Captain Marvel - Monica Rambeau (1983)
Starfox (1984)
Namor, The Submariner (1985)
Doctor Druid (1987)
The Captain (1988)
Jocasta (1988)
Yellowjacket - Rita DeMara (1988)
Demolition Man (1989)
Gilgamesh (1989)
Mister Fantastic (1989)
Invisible Woman (1989)
Quasar (1989)
Sersi (1990)
Spider-Man (1990)
Stingray (1990)
Rage (1991)
Sandman (1991)
Machine Man (1991)
Thunderstrike (1992)
Crystal (1992)
Justice (1998)
Firestar (1998)
