Art quilt books I can recommend

Martha Sielman's
Art Quilt Portfolio: People & Portraits
(Lark Crafts, 2013)
Martha Sielman's
Masters: Art Quilts, Vol. 2
(Lark Crafts, 2011)
500 Art Quilts
Edited by Ray Hemachandra, juried and introduced by Karey Bresenhan
(Lark Books, 2010)
Martha Sielman's
Masters: Art Quilts
(Lark Books, 2008)