The new issue shows a pen-and-ink drawing of a 1920's vehicle.
From his letters it is known that a pen-and-ink drawing was made before a painting of the same subject.
After five years of meticulous research and pen-and-ink drawing, their maps were ready for publication.
Another was a pen-and-ink drawing by Picasso that sold for $264,000, or $64,000 more than the high estimate.
His pen-and-ink drawings have become identified almost exclusively with the Oz series.
The collection has 8 paintings and 13 pen-and-ink drawings from 1967 to 1972, the year before the artist died at 91.
He was also an expert at black pen-and-ink drawings.
His pen-and-ink drawings have been exhibited across the nation and published internationally.
"Landscape," written in 1967, is more a pen-and-ink drawing than a painting.
In the center of each page was a large pen-and-ink drawing by Marko.
