Question

The delegates who attended the Philadelphia Convention in the summer of 1787 are known as what?

Answer 1

The delegates that attended the Philadelphia Convention in the summer of 1787 came to be known as The Framers, as defined by the National Archives.

Make sure you do not confuse them with the signers of the constitution. These 55 delegates drafted the proposed Constitution of the United Stated, and 39 only of them would eventually sign it.