Albert G. Valdeavellano published postcards under several variations of his name.  The haunting real photo in bluetone on this web site's title page is signed Fernández, perhaps the partner in Fernández-Valdeavellano Foto, whose known postmarks date from 1903.   The firm's earliest postcards were lithographs printed in Europe from black and white photographs.  Only an address could be written on their undivided backs, and limited space was provided on the front of the cards for writing a message.  Later Valdeavellano postcards, whose known postmarks date from 1907 to 1913, lack Fernández' name.  Printed on a divided back, the image fills the face of the card in tones of either brown, blue, grey, green, or even rainbow.