Thank you for your inquiry. The piece "Daisy Slumber" is not a part of the Corning Museum of Glass collection and we have no reference to the other editions.
"Glass A to Z" by David J. Shotwell defines cameo glass as, "an object formed of cased or flashed glass where portions of one or more of the outer layers are removed either by carving, cutting, etching or other means, leaving a design, in relief, against a background of a different color."
"In ancient times, parts of the overlay were cut away by chiseling or by wheel, leaving a design of the overlay color against a background of a different color. In the last quarter of the 19th century, an acid-resistant bituminous coating was put on the surface parts to be developed as a pattern and the unprotected areas exposed to hydrofluoric acid bath, baring the background."
Here's a short chronology of Kelsey Murphy:
Kelsey Murphy (American, born 1944)
1981: Glass Expectations, Inc. is founded in Cincinnati, OH by Kelsey Murphy, specializing in sand carved flat glass.
1987 Murphy moves Glass Expectations equipment to Ceredo, West Virginia, and officially become part of The Pilgrim Glass Corporation.
1992 Huntington Museum of Art, Huntington, West Virginia, and its Senior Curator, G. Eason Eige, present the first museum exhibition of Murphy's cameo glass.
1995 Murphy create "Super NOMA" Vase of eleven cameo colors for the New Orleans Museum of Art.
You may want to interlibrary loan the book "Artistry in Glass: Cameo Glass by Kelsey Murphy" by the New Orleans Museum of Art. If you wish to obtain this item, please contact your local library. The Rakow Research Library is a member of the Online Computer Library Center (OCLC); your library can contact us through OCLC or they may mail an Interlibrary Loan form to us. You may request up to five items at a time. We send photocopies of articles and microfiche copies of our books (if they have been microfilmed) through Interlibrary Loan for four weeks use.
For more information about me or the glass we make, check out Magic in the Mountains by Donna Meredith, the biography of the glass. It is available on Amazon