1. Letter to Kathan Brown and Tom Marioni from Charles Christopher Hill (Vision) Bookmark Letter to Kathan Brown and Tom Marioni from Charles Christopher Hill (Vision), accession number 1995.46.376.a-b. Search result 1 Artist: Hill, Charles Classification: Work on paper Materials: a: ink and stamp mark on paper b: ink and stamp mark on envelope with postmark and postage stamp, two-sided Dimensions: sheet: 11 x 8 1/2 in. Accession Number: 1995.46.376.a-b