@book {johnson_hugues-adrien_1988,
	title = {Hugues-Adrien Joly garde du Cabinet des Estampes de la Biblioth{\`e}que nationale. Lettres {\`a} Karl Henrich von Heinecken, 1772-1789},
	year = {1988},
	publisher = {Biblioth{\`e}que nationale},
	organization = {Biblioth{\`e}que nationale},
	address = {Paris},
	author = {William McAllister Johnson}
}
@article {johnson_1807_1986,
	title = {1807 : premi{\`e}re exposition permanente de gravures au Cabinet des estampes de la Biblioth{\`e}que nationale},
	journal = {Nouvelles de {l{\textquoteright}Estampe}},
	number = {s 86-89},
	year = {1986},
	pages = {18{\textendash}21},
	author = {William McAllister Johnson}
}
@article {johnson_figures_1984,
	title = {Figures et all{\'e}gories du Cabinet des Estampes, Biblioth{\`e}que nationale de Paris, au XVIIIe si{\`e}cle},
	journal = {Nouvelles de l{\textquoteright}estampe},
	number = {78},
	year = {1984},
	pages = {22{\textendash}29},
	author = {William McAllister Johnson}
}
@article {johnson_reserve_1982,
	title = {La R{\'e}serve des Estampes au XVIIIe si{\`e}cle : premier choix d{\textquoteright}{\oe}uvres en vue d{\textquoteright}une R{\'e}serve des Estampes, par Hugues-Adrien Joly, 1790},
	journal = {Nouvelles de l{\textquoteright}Estampe},
	number = {66},
	year = {1982},
	pages = {9{\textendash}23},
	author = {William McAllister Johnson}
}
