Keywords: Benjamin Franklin's glass harmonica (LoC) edited.jpg L'Armonica Lettera del Signor Beniamino Franklin al Padre Giambatista Beccaria Regio Professore di Fisica nell' Univ di Torino Page 2 Milano 1776 Le glassharmonica 'harmonica de verre' ou 'armonica de verre' de Benjamin Franklin La armônica de Benjamin Franklin feita de várias taças de formatos diferentes http //www loc gov/exhibits/treasures/images/bf0043s jpg The picture refers to some letter of B Franklin to Abbé en Giambatista Beccaria in ~mid-1762 unknown / undecipherable ~1776 acc Library of Congress PD-old Giambatista Beccaria Glass harmonicas |