The following titles are bound together:
[1] Durand, Guillaume [Guillelmus Duranti]. Speculum judiciale. Ed. Franciscus Moneliensis. Padua: Johannes Herbort, de Seligenstadt, 1478–79.
Morris owned the second section (dated 21 November 1478).
References: Ellis valuation, fol. 35 (10s.). — ISTC (id00448000). — Thatcher 1, no. 579.
Digital version: BSB.
[2] Battista, da Sambagio [Baptista de Sancto Blasio]. Varii tractatus juridici. Venice: Erhard Ratdolt, 1481.
Morris owned the fourth of five parts (dated 31 May 1481).
References: ISTC (is00126000). — Thacher 1, no. 284.
Digital version: BSB.
[3] Cipolla, Bartolomeo [Bartholomaeus Cepolla]. De simulatione contractuum. Pavia: Leonardus Gerla, 15 February 1498.
References: ISTC (ic00400000). — Thacher 1, no. 634.
Digital version: BSB.
[4] Militio, Albricus de. De testibus. Pavia: Leonardus Gerla, 15 March 1497.
“Attributed in this edition to Albericus de Rosate” (ISTC).
References: Ellis valuation, fol. 41 (no price). — ISTC (im00578000). — Thacher 1, no. 635.
Digital version: BSB.
[5] San Giorgio, Giacomino da [Jacobinus, de Sancto Georgio]. Aureus et in pratica perutilis totus et singularis tractatus feudorum et homagiorum. Milan: Giovanni Angelo Scinzenzeler, 1503.
Reference: Ellis valuation, fol. 36 (no price given).
Provenance: Henry Howard, Duke of Norfolk. — Royal Society of London (gift from Howard). — Morris. — Richard Bennett. — Sotheby 1898, lot 402 (sold to Quaritch for £3 3s.). — John Boyd Thacher. — Library of Congress (Incun. 1478.F74 Thacher Coll. Copy 2).
Sotheby 1898:
The Library of William Morris 
June 5, 2017
1478, 1481, 1497, 1498, 1503