University of Michigan
University of Michigan: Instrument Encyclopedia: Baroque Organ
This lesson has brief info on the baroque organ and its history. You can also listen to a sound sample.
University of Michigan
University of Michigan: Instrument Encyclopedia: Baroque Violin
This brief article overviewing the history of the violin, and its role in a variety of musical genres, includes an image and references for further reading and research.
Classical Net
Classical Net: Timeline of Famous Composers: 1100 1700
A PDF timeline of composers in the Gothic, Medieval, Renaissance, and Baroque periods.
Other
Lute Harpsichord: A Forgotten Instrument
Interesting website on the lute-harpsichord, which is called "one of Bach's favorite keyboard instruments." Provides an in-depth history of this "forgotten instrument" and the ordinary lute.
Classical Net
Classical Net: Musical Periods
This site contains the most significant artistic output of the most important composers within each historical period.
Classical Net
Classical Net: Timeline of Famous Composers 1600 to Present
PDF document showing composers in various musical eras from the Baroque period to modern times.