Abstract Exhibits in SF

Some viewing suggestions from Manuel + a query:

today went to modernism and saw:

http://www.modernisminc.com/artists/Charles_ARNOLDI/

and at toomey-tourell:

http://www.toomey-tourell.com/zoom/?img=1333

very different shows although both abstract

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I have this artist that I am interested in but can't figure his work out Bernard Piffaretti who paints this:

http://www.bernardpiffaretti.com/peintures.html