On this day 250 years ago in Philadelphia “a Provincial Meeting of [75] Deputies Chosen by [11 Pennsylvania] Counties” met to adopt resolutions in support of Boston and Massachusetts. The Pennsylvania Resolutions proclaimed the Intolerable Acts “unconstitutional,” pledged aid to Boston, and declared

that there is an absolute necessity, that a congress of deputies from the several colonies be immediately assembled, to consult together, and form a general plan of conduct to be observed by all the colonies, for the purposes of procuring relief for our suffering brethren, obtaining redress of our grievances, preventing future dissensions, firmly establishing our right, and restoring harmony between Great-Britain and her colonies on a constitutional foundation.

and that

if the congress shall judge agreements of non-importation and non exportation expedient, the people of this province will join with the other principal and neighbouring colonies, in such an association of non-importation from and non-exportation to Great-Britain as shall be agreed on, at the congress.

Source: https://quod.lib.umich.edu/cgi/t/text/text-idx?cc=evans;c=evans;idno=N10448.0001.001;node=N10448.0001.001:4;rgn=div1;view=text