I have no idea who posted gifs from 1776 (movie from 1972) but damnit now I have it on (bc Tubi) and
Christ is it 1970s wackassery goofiness
But lines (quotes?) like this, holy shit
As to the lines in it....
A fair bit of the dialog's from actual letters written by the real individuals being portrayed, just slightly modified.
...for example Adams protesting he'll be forgotten and that Franklin, his lightning rod, Washington, and his horse, will be said to have done everything