Essai sur l'indigence dans la Flandre orientale - Keverberg de Kessel, Charles-Joseph (Chez J.-N. Houdin, 1819)
Goldsmiths'-Kress no. 22630.100. - Manuscript notes in margins. - RLIN, CTRG94-B6051. - Reproduction of original from Kress Library of Business and Economics, Harvard University