Signed, titled, and dated verso; bears the inscription «B - 10» verso; retains Santa Barbara Museum of Art inventory label on canvas stretcher verso (lamodern.com)
Signed and dated «L. Mullican 1963» verso; bears the inscription «From the East» in graphite on canvas stretcher verso; retains partial San Francisco Museum of Art and Rose Rabow Gallery labels verso (lamodern.com)
He took these loose bits and tacked them to canvas stretchers with carpet tacks. (en.wikipedia.org)