Grumiaux, Arthur. (1921–1986) & Swarowsky, Hans. (1899–1975) Signed ProgramSigned bifolium (paginated 1922) removed from a program of a concert of the Association Philharmonique of Lyon, France, February 5, 1956. The signature of the Belgian violinist and conductor is on page 20. Another signature next to it is that of Austrian conductor Hans Swarowsky, not of Carl Schuricht, the conductor billed in the program; it appears that Schuricht had to be replaced at short notice. 9. 5 x 6 inches (24 x 15 cm). Horizontal fold;