VOL. 92, No. 2 of the Proceedings of the American Philosophical Society (1948) is devoted to studies of historical documents in the library of the Society at Philadelphia. Chief among these is a paper by W. E. Lingelbach on new source material regarding Benjamin Franklin‘s activities as printer and publisher both during the first half of his life and in his later years. Much of the material relates to his interests in Philadelphia during 1728-66, the most interesting being concerned with his printing activities in Passy. This latter includes a unique collection of more than four hundred brass stencils, apparently used by Franklin in the study and designing of type, as well as inventories of fonts cast at Passy and of type and other printing materials purchased from the leading English, French and possibly Dutch type-founders. Other articles in this number include Prof. G. Chinard‘s study of Franklin as negotiator, December 1777, Prof. P. A. W. Wallace‘s appreciation of H. E. Muhlenberg‘s work as botanist, Prof. T. D. Cope‘s note "Collecting Some Material about Charles Mason and Jeremiah Dixon", the astronomers and geodetic surveyors, and Prof. I. J. Cox‘s account of the Freeman Red River Expedition of 1806.