----------------------------Original message---------------------------- This can only be done via extensive look-up tables and not computationally. BLM might have a set of the section corners; one of the oil companies does and wants $250,000 a copy! -- Duane F. Marble E-mail: [log in to unmask] Dept. of Geography The Ohio State University Telephone: (614) 292-2250 Columbus, OH 43220 Fax: (614) 292-6213