This is from page 26 of the 2010 March-April issue of Bottles & Extras, the publication of the FOHBC (Federation Of Historical Bottle Collectors).

Caption reads

"Evelyn and Dick Bowman at GVBCA's 1972 show with insulator exhibit. (Courtesy of John DeVolder)"

Unfortunately in the original, Dick is cut off on the right side of the photograph too...

Hard to see the specific insulators but it looks like a nice exhibit! Plenty of showmanship!