The autographs are from the same source.

This series presents no portraits of David Brearley of New Jersey, Thomas Fitzsimons of Pennsylvania, and Jacob Broom of Delaware.

With respect to the others we give such information as Albert Rosenthal, the Philadelphia artist, inscribed on each portrait and also such other data as have been unearthed from the correspondence of Dr.Emmet, preserved in the Manuscript Division of the New York Public Library.
Considerable controversy has raged, on and off, but especially of late, in regard to the painted and etched portraits which Rosenthal produced nearly a generation ago, and in particular respecting portraits which were hung in Independence Hall, Philadelphia.

Statements in the case by Rosenthal and by the late Charles Henry Hart are in the "American Art News," March 3, 1917, p.4.See also Hart's paper on bogus American portraits in "Annual Report, 1913," of the American Historical Association.

To these may be added some interesting facts which are not sufficiently known by American students.
In the ninth decade of the nineteenth century, principally from 1885 to 1888, a few collectors of American autographs united in an informal association which was sometimes called a "Club," for the purpose of procuring portraits of American historical characters which they desired to associate with respective autographs as extra-illustrations.