Author: Albertus, de Saxonia, 1316-1390 Short Title: De proportionibus (1487) Title: Magister Alberti de Saxonia p[ro]portionu[m]. Imprint: Venice: I[m]pressus p[er] magistr[um] Andrea[m] catharense[m], die 21 Iulii M.cccc.xxxlvii [1487?] Comments and Notes: Title and imprint from colophon. Leaf [1a]: Excellentissimi Magistri Alberti de Saxonia tractatus p[ro]portionu[m] i[n]cipit felicit'. Signatures: a6 b4. Provenance: Bern Dibner (donor). Includes extensive marginalia. Smithsonian Call Number: QA117 .A33 1487 ISTC Goff Hain-Copinger GW Proctor Polain UKBYIA00344000-B A-0344         Author: Albertus, de Saxonia, 1316-1390 Short Title: Questiones subtilissime in libros de celo et mundo (1492) Title: Questiones subtilissime / Alberti de Saxonia in libros de celo [et] mundo. Imprint: Venice: Imp[r]esse ãt Ventijs arte Boneti d' Locatellis Bergome[n]sis, impensa … Octauiani Scoti ..., 1492, nono kale Noue[m]bris [24 Oct.] Comments and Notes: Edited by Hieronymus Surianus. cf. colophon. Imprint from colophon. Signatures: A-H6 I4 (I4 blank) Binding: Ms. vellum music leaf. Provenance: Bern Dibner (donor). Imperfect copy: lacks last blank. Smithsonian Call Number: QB41 .A334 1492 ISTC Goff Hain-Copinger GW Proctor Polain UKBYIA00347000-B A-0347         Author: Albertus, de Saxonia, 1316-1390 Short Title: Questiones subtilissime super libros posteriorum (1497) Title: Questiones subtilissime / Alberti de Saxonia super libros posteriorum. Imprint: Venice: Imp[re]sse ma[n]dato [et] expensis ... Octauiani Scoti ... p[er] Bonetu[m] Locatellu[m] ..., 1497, septimo idus Martias [9 Mar.] Comments and Notes: Edited by Johannes Baptista de Tolentino and Jacobus Baptista de Aloisiis, with additions by Aloisiis and Domitius Palladius. cf. Goff A349. Imprint from colophon. Signatures: A-E6. Provenance: Bern Dibner (donor). Smithsonian Call Number: Q175 .A33 1497 ISTC Goff Hain-Copinger GW Proctor Polain UKBYIA00349000-B A-0349