Bonhams & Butterfields will hold its Spring auction of California and Western Paintings and Sculpture on April 20, 2010. The Los Angeles-based sale will feature a wide variety of important California, Western, Society of Six, Hawaiian scenes and Plein Air works by established American artists including Joseph Kleitsch, Franz Bischoff, Edgar Payne, Granville Redmond and William Wendt as well as early, rare to market works by William Hahn, Thomas Moran and Thomas Hill. Undoubtedly, ...