Ball ground line etching, Independent contract, 12" X 12" Ball ground line etching, detail Ball ground line etching, detailBall ground line etching, Independent contract, 12" X 12" Ball ground line etching, detailBall ground line etching, Independent contract, 12" X 12" Ball ground line etching, detailLine etching with aquatint, Introduction to Intaglio, 5" x 7"Engraving, Introduction to Intaglio, 4" X 6"Line etching with aquatint, Introduction to Intaglio, 7" x 5"Aquatint, Introduction to Intaglio, 7" x 5"Line etching with aquatint, Introduction to Intaglio, 3" x 3"Line etching with aquatint, Introduction to Intaglio, 9" x 9"Line etching with aquatint, Introduction to Intaglio, 3" x 7"Line etching with aquatint, Introduction to Intaglio, 6" x 4"Line etching with aquatint and a la poupee, Introduction to Intaglio, 8" x 10"Multiple plate line etching with aquatint, Introduction to Intaglio, 10" x 8"