"3. Paris, chez Boyer, rue de Richelieu, à la Clef d'Or, s.d. (end 18th cent.), in-folio, engraved title + 30 pp. of engraved music (numbered 2-31), sewn, no binding nor wrapper (removed from a convolute binding). Titlepage signed in autograph by Boyer (the publisher). (Deserves a binding). (See Lesure ; Cat. Mus. Impr. avant 1800 pp. 190. No copy in a Parisian library. Only one copy of these sonates but printed by Gaveaux)."