. Dillin returned to
Blackhawk, now a DC property, and when the book's initial run ended, was assigned
Justice League of America, a superteam series featuring, at the time,
Superman, Batman, the
Flash,
Green Lantern,
Wonder Woman,
Green Arrow, and the
Atom. Dillin penciled the series from #64–183 (Aug. 1968–Oct. 1980), except for the planned reprint issues #67, 76, 85 and 93; issue #153 which was pencilled by
George Tuska; and issue #157 where he provided the intro and epilogue pages while Juan Ortiz pencilled the main story. He had completed the first 2½ pages of #184 when he died; penciler
George Pérez and inker
Frank McLaughlin took over the title, starting that issue from scratch. Dillin's tenure on
JLA included the reintroduction of
Red Tornado. He and writer
Dennis O'Neil made several changes to the membership of the JLA by removing founding members Wonder Woman and the
Martian Manhunter. They also oversaw the migration of the
Black Canary from Earth-2 to Earth-1; and the introduction of the
JLA satellite. Dillin and writer
Len Wein produced the return of the
Seven Soldiers of Victory in issues #100–102 and the introduction of the
Quality Comics characters to the
DC continuity as the
Freedom Fighters in issues #107–108. In late 1972, Dillin drew the DC chapter of a
metafictional unofficial
crossover crafted by writers Wein,
Steve Englehart, and
Gerry Conway spanning titles from both major comics companies. Each comic featured Englehart, Conway, and Wein, as well as Wein's first wife
Glynis,
interacting with Marvel or DC characters at the
Rutland Halloween Parade in
Rutland, Vermont. Beginning in
Amazing Adventures #16 (by Englehart with art by
Bob Brown and Frank McLaughlin), the story continued in
Justice League of America #103 (by Wein, Dillin and
Dick Giordano), and concluded in
Thor #207 (by Conway and penciler
John Buscema). Wein and Dillin created the
supervillain Libra in
Justice League of America #111 (June 1974), who would play a leading role in
Grant Morrison's
Final Crisis storyline in 2008. Dillin drew the return of Wonder Woman to the team in issues #128–129 (March–April 1976). He and writer Steve Englehart crafted a new origin story for the JLA in issue #144 and inducted
Hawkgirl into the team two issue later. Other highlights of Dillin's tenure included the 1976 integration of the defunct and newly acquired
Fawcett Comics heroes in issues #135–137, and the murder of the original
Mister Terrific in issue #171. Dillin and writer
Bob Haney created the
Super-Sons, Superman Jr. and Batman Jr., in ''
World's Finest Comics #215 (Jan. 1973). He drew several Green Lantern backup stories in The Flash from 1974 to 1977. In 1975, Dillin drew the framing chapters for a 1940s Seven Soldiers of Victory script in Adventure Comics'' #438 and 443. He was living in
Peekskill, New York, at the time of his death. As per the letters page of
Justice League of America #184, Dillin suffered a heart attack. ==Animation==