1965 Robert Williamson Color Study (Watercolor Plate 2) 1930s carving 690 AD map of what

690 AD map of what is now Utrecht and that the castle is the castle Trecht

this seems a notable photograph relative to mining history and its technologies

but I've never found as  large a set as this

in excellent vintage condition (photos are shot through the glass of the frame

1965 Robert Williamson Color Study (Watercolor Plate 2) 1930s carving 690 AD map of whatThis one from a group of 1965 color studies by a Robert Williamson, found together in my neck of the woods, which, happily, were very carefully kept over the years: all are gorgeous and in near perfect condition. Certainly done for an art class, and with great precision and care; certainly our Robert earned an A+. This one makes me think of the sea and the sun and feels to me the most elementally perfect of all! 12" x 18", excellent condition, color