Deletion of Eugene Mackaben

Comment: Mackaben's work is held at Tucson Museum of Art (https://tucsonmuseumofart.pastperfectonline.com/webobject/4F14D6B1-1F24-4C2D-8E3F-332834203270 see here), and the University of Arizona Museum of Art (https://uarizona.pastperfectonline.com/webobject/1EDF1F17-837E-4A13-B608-181644044248 here, and https://uarizona.pastperfectonline.com/webobject/8B141517-1261-42EC-B44D-844502508400 here), his work was exhibited after his death ie. 1998 exhibition, ''Tucson's Early Moderns, 1945-1965'' held at the University of Arizona Museum of Art (https://www.worldcat.org/title/tucsons-early-moderns-1945-1965/oclc/40632316 here) (have added this to article), so with the info already in the article (unfortunately without inline references) may be enough to meet 
Stance: comment
Cited policy: Wikipedia:Notability (WP:ARTIST)