Ioh. CloppenburgI De foenore et usuris, brevis institutio cum ejusdem epistola ad Cl. Salmasium - Cloppenburg, Johannes 1592-1652 (Ex officinâ Elseviriorum, 1640)
Goldsmiths'-Kress no. 00713.1. - Includes (p. 118-158) Ioh. Cloppenburgii Meditatio de vera praxi pietatis cum animo sua sorte contento in fuga peccati fnebris cum parænesi ad divites in hoc seculo ut in Deo ditescant, ex verbis Christi Lucæ VI, 34-35, dated Belgice scripsi mense Octobri 1636, Latinam feci mense Majo 1637. - OCLC, 20887134. - Preface dated (p. [14], 1st group): Dabam è Musæo Brielano, xvii Ianuarii MDCXL. The letter is dated: Perscripsi Brielæ viii kalendas Mart. MDCXXXVIII. - Reproduction of original from Kress Library of Business and Economics, Harvard University