Editing Collegiate Press Service (section)

=== Interrobang ===
Stein and Sonn converted the operation to a commercial enterprise, adding '''High School News & Graphics''' to its college and university press service.

Stein remained as co-publisher of CPS<ref name=DP>{{cite news|last=Stratton|first=Jim|url=https://www.dailypress.com/news/dp-xpm-19920403-1992-04-03-9204030016-story.html |title=POLITICAL CAMPAIGNS IRRITATE CARTOONIST|work=[[Daily Press (Virginia)|Daily Press]]|date=Apr 3, 1992}}</ref> for only a short time, as he was appointed as the staff editorial cartoonist of the ''[[Rocky Mountain News]]'' later in 1978.<ref name="Ed Stein Cartoonist Profile">{{cite web|publisher=[[Association of American Editorial Cartoonists]]|url=http://editorialcartoonists.com/cartoonist/profile.cfm/SteinE/|title=AAEC - Cartoonist Profile: Ed Stein|archive-url=https://web.archive.org/web/20181221184113/https://editorialcartoonists.com/cartoonist/profile.cfm/SteinE/|archive-date=Dec 21, 2018}}</ref> Sonn renamed the whole operation '''Interrobang, Inc.''', with himself as President and CEO.<ref name=Interrobang>{{cite web|title=Bill Sonn, Author and Writer|url=https://www.linkedin.com/in/billsonn/details/experience/|publisher=[[LinkedIn]]|access-date=Jan 29, 2024}}</ref>

In 1990,<ref name=Interrobang /> Interrobang (and CPS) was acquired by [[Tribune Media Services]] (TMS), with Sonn staying on as CEO.