Hal Foster Preliminary Sunday comic.

Just found this online. It's the preliminary artwork for a Prince Valiant Sunday comic page by Hal Foster, which is pretty rare! The finished page was published on 11-27-1977. The pencil layout includes a research note in the fourth panel about Aleta's formal headdress! (Click to enlarge). It is currently auctioned through Heritage.

Hal Foster (born in 1892) wrote and drew his comic 'Prince Valiant' since 1937. After 1970 he continued to write the strip up until 1980, collaborating with John Cullen Murphy, Gray Morrow and Wally Wood for the artwork. Foster died two years later, in 1982.