found: Ponchielli, Amilcare. Pezzi per organo, c1999:t.p. (Marco Ruggeri) back cover (b. in Cremona)
found: Rancati, Ettore. Musica sacra per il coro e la banda di Castelleone, 2012:title page (Marco Ruggeri, editor)
found: Davide, da Bergamo, padre. Allegretto for harpsichord, 2015:title page (Marco Ruggeri) page 14 (organ teacher at the Conservatoire of Novara and titluar deputy organist at the Cremona Cathedral, where he is also the principal of the Scuola Diocesana di Musica Sacra "D. Caifa")
found: Bossi, M.E. Composizioni per organo, 2017:insert, page 13 (Born in Cremona in 1969)
