Ah, the London Pianoforte School - Dussek was one of the composers, considered to be a "Georgian Classicist" rather than a romantic pioneer like Cramer and Field were. I only have one actual recorded sonata, the e-flat major (The Farewell), performed by Ian Hobson on the Arabesque Label - volume 1 of 3. it was recorded in the mid-1980's so it may be difficult to obtain. I have had success getting used recordings through the Amazon.com pre-order function. Music of the pianoforte school was edited by Nicolas Temperley of the University of Illinois in a 20-volume set through Garland Press, and is no longer in print. I have had to resort to various library reproductive services to obtain actual music.