What’s in a name? Apparently, lots. The name Philadelphia Section marked the first time that a section was named after a city instead of a state (or a union of states or a proper subset of a state). The name itself was certainly controversial. In the late $$1960$$s Albert Bennett reminisced about events surrounding that designation.
Bennett was certainly right on target about attendance from mathematicians located in Delaware and southern New Jersey. Delaware has remained an integral part of the section since its founding. However, a New Jersey Section was created in $$1956\text{,}$$ and although most residents from the southern part of the Garden State have participated in its activities since its inception, several continue to attend the Philadelphia Section’s programs. As we shall see, mathematicians from Princeton and Rutgers were especially active in the Philadelphia Section in the $$30$$-year period from the founding of the section in $$1926$$ to the founding of the New Jersey Section.
If Bennett was accurate about attendance in the eastern part of Pennsylvania, his comments about the western part were uncannily prescient. The Allegheny Mountain Section became the $$19th$$ MAA 2  section in $$1933\text{.}$$ (The Wisconsin Section was created one year earlier.) As Bennett predicted, the Allegheny Mountain Section attracted mathematically oriented residents of West Virginia and eastern Ohio as well as western Pennsylvania. It should be mentioned, however, that the formation of the second section in Pennsylvania caused the Philadelphia Section to lose its colleagues from Penn State, who became affiliated with the Allegheny Mountain Section. As with some New Jersey mathematicians, a cadre of members from central Pennsylvania participated actively in the Philadelphia Section until the new section was formed, and a few of them continued their involvement after that.
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