Grove would be my suggestion as well. Also, I don't know if you'd considered it but there are some really great blogs out there on this kind of thing. Starting your own can even be good practice as well.
Here are a couple I recommend:
http://structureandimagery.blogspot.com/?m=1
http://anythingimagined.blogspot.com/2012/08/art-history-franz-marc.html?m=1