Bhob was apparently instrumental in putting on Phonus Balonus, an underground cartoon exhibit at an offshoot of the Corcoran Gallery on Dupont Circle. Sean Howe has photographs online here, here, and here.
Here are the scans about the exhibit. I'm afraid most of them are only partially complete, but they give you an idea about what was in the show, and how it was received. Brad scanned the whole catalog of the show, and it's online here. Two libraries are shown in Worldcat as holding a copy of it - the Tate in London and UC Berkeley in California.
|Corcoran Gallery's press release, page 1|
|Front cover to the catalog with art by Bhob.|
|Exhibit opening ticket.|
|Newspaper clipping with Skip Williamson art|
|Article from the New York Post.|
|Fragment of a Washington Post article|
|Partial Washington Post article from May 21, 1969.|
|Partial Washington Star article from June 1, 1969|
|Article from an unknown New York city magazine.|
For more information on Bhob's life, read Bhob Stewart, 1937-2014, by Bill Pearson, Feb 26, 2014.