Ludwig van Beethoven (1770 - 1827)
Franz Schubert (1797 - 1828)
Wolfgang Amadeus Mozart (1756 - 1791)
Luigi Boccherini (1743 - 1805)
Marianna Martines (1744 - 1812)
Joseph Haydn (1732 - 1809)
Joseph Bologne, Chevalier de Saint-Georges (1745 – 1799)
Historical Dictionary of Music of the Classical Period by 
Mozart by 
Classical Period Music
Classical String Quartets (1770-1840)
Run by The Center for Beethoven Studies, it is the largest collection of Beethoven materials outside of Europe.
Classical Music: The Classical Period (Mozart, Beethoven, Haydn...)
The Classical Period | Music History Video Lesson
Top Classical Music - Music History Channel
NMA Online, The Neue Mozart-Ausgabe: Digitized Version
Digitized complete works of Mozart
Classical Music Listening Lists
Classical Music and the Music of the Classical Era
Beethovenhaus-Haus Bonn provides access to digitized works in Beethoven's catalog as well as sketches and copies.
