cover illustratrion for "Terror Stalks the Night Nurse" by Blanche Y.
Mosler, published in 1963 by Paperback Library.
The medium is Casein on board.
Notice that there is no nurse's cap on the woman in the actual
illustration, while the cover shows one! Examination of the
artwork reveals that the cap was originally there and was later
removed. There is no logical explanation for this
other than Lou may have thought that it looked better without the cap
and changed it after he got the illustration back. For what
purpose is unkown.