Register of Pennsylvania Biologists, eds. 1–2 (Out of Print)
Ed. 1, compiled and edited by T. D. Jacobsen. 1989. 73 pp.; 8 1/2 x 11". Paper cover. ISBN 0-913196-53-3. Ed. 2, compiled and edited by T. D. Jacobsen and Sharon M. Tomasic. 1992. 120 pp.; 8 1/2 x 11". Paper cover. ISBN 0-911239-41-3. Published jointly by the Carnegie Museum of Natural History as Special Publication no. 16.
This directory of Pennsylvania biologists included their current research/specialties. Descriptive entries were indexed by specialty, institution and geographic location within the state.