[9] In the 60s and early 70s he brought artists such as Robert Rauschenberg, Carl Andre, Sol LeWitt, Bruce Nauman, and Donald Judd to Vancouver, Canada.

While in New York the gallery’s presence was amplified by doing exhibitions in conjunction with cultural institutions such as the Guggenheim Museum and the Cartier Foundation (Paris).

Installed at ACE/Venice, the Heizer piece required that huge chunks be gouged out of the gallery floor to create recessed areas able to accommodate boulders.

[14] In September 2022, LA Times did a long expose on Christmas' career and the state of his court case where he faced "up to 15 years in prison if convicted".

[16] In a 1983 lawsuit in Los Angeles federal court, Rauschenberg sought $500,000 from Chrismas' Flow ACE Gallery; the artist won a $140,000 judgment in the suit in 1984.

[10] Eventually the two reconciled their differences and in 1997 Robert Rauschenberg insisted that ACE Gallery New York (in conjunction with the Guggenheim Museum) host his Retrospective.

[17] In 1986, Chrismas pleaded no contest after Canadian real estate developer C. Frederick Stimpson alleged that he had improperly sold work belonging to the collector, among them pieces by Andy Warhol and Rauschenberg.

In 1989, ACE Gallery wanted to borrow a work by Judd along with Carl Andre's 1968 Fall, both owned by Count Giuseppe Panza, for an exhibition devoted to minimal art called The Innovators Entering into the Sculpture.

Rather than shipping the two large scale works from Italy, Panza authorized ACE Gallery to refabricate the pieces in Los Angeles.

Andre and Judd both publicly denounced these recreations as "a gross falsification" and a "forgery," in letters to Art in America,[21] however, the fabrication of the pieces were permitted by Panza Collection in Italy, the owner of the works.

Despite the confusion surrounding the Panza refabrications, both Carl Andre and Donald Judd maintained a professional relationship with Douglas Chrismas and ACE Gallery.

In turn, according to a January 2007 consignment agreement, they agreed to have Doug Chrismas, owner of ACE Gallery in Los Angeles, sell the Lichtenstein.

Days later, a federal agent contacted the gallery to warn Chrismas that the Lichtenstein was subject to seizure and forfeiture, court papers say.