Thanks to everyone who responded to my query on the above; the responses were very helpful. I've sent copies of the responses to those of you who had requested I do so; if I've missed someone or if you wish to receive a copy of the responses, please e-mail me. Phil Heagy Menil Collection Library 1511 Branard St. Houston, TX 77006 PH: (713) 525-9426 FAX: (713) 525-9444 e-mail: [log in to unmask]