Deletion of Michael Winkler

Comment: per  #4, held in permanent collections "of several notable galleries or museums": Museum of Modern Art (extensive collection),http://arcade.nyarc.org/search~S8?/aWinkler%2C+Michael+Joseph./awinkler+michael+joseph/-3%2C-1%2C0%2CB/exact&FF=awinkler+michael+joseph&1%2C11%2C Museum of Contemporary Art, Chicago,http://www.mcachicago.org/exhibitions/now/2013/163 Berlin State Museums,https://opac.smb.spk-berlin.de/LNG=EN/CLK?IKT=12&TRM=611454769 Brooklyn Museum,http://arcade.nyarc.org/search/?searchscope=2&searchtype=o&searcharg=28243775 Yale University special collections.http://orbis.library.yale.edu/vwebv/search?searchCode=GKEY^*&recCount=50&searchType=1&searchArg=ocm28243775
Stance: keep
Cited policy: Wikipedia:Notability (WP:ARTIST)