LA TRAU (Olivier de). Discourse on the Order, Militia & Religion of the Holy Spirit. Esprit, dedicated to the Royal Mother of the King, Restorer of the said Order. S.l., s.n., 1629. [FOLLOWED BY] [LA TRAU (Olivier de)] Bref discours sur la différence des Croix d'or, des chevaliers des deux Ordres du Roy, & des Chevaliers Hospitaliers de l'Ordre du S. Esprit, sous la règle de S. Augustin. Paris, s.n., 1629. [SUIVI DE] Sommaire des privilèges, exemptions et indulgences accordées par plusieurs papes à l'Archihospital du Sainct Esprit de Saxe de Rome, & à ses dépendances. Viterbo, s.n., 1584 [probably 1629]. Set of 3 works bound in an in-8 volume, rare first editions devoted to the Order of the Hospitallers of the Holy Spirit, known as the Order of the Holy Spirit of Montpellier, illustrated with an engraved frontispiece depicting the Queen at prayer. Bound in full contemporary red morocco, smooth spine, boards and spine decorated with a fleur-de-lys pattern in gilt, framed with a roulette on the boards. Handwritten bookplate "Stephanius Baluzius Tutelensis", of Étienne Baluze, an important French historian, jurist and librarian of the late 17th and early 18th centuries (bindings rubbed, restorations to the binding). Expert : Nicolas ASVISIO - Librairie La Fauconnerie