----------------------------Original message---------------------------- Sue, thought I saw a figure recently of something like 7,500 sheets for all of the scales within the series combined (1:24,00, 1:100,000, etc.). I am not too sure how far off I am on this, hope others can give a specific figure. We (Melissa Lamont and I) are working out a method of cataloging ours here at PSU and using Innovacq as a checkin/holdings system to produce sheet-level access. Hope to do a presentation/paper on this topic soon. Paige Andrew