BPAA Lecture Series 2002   

Lecture 6

The 19th Century
Parallaxes Found

This reference has good chapters on Bessel, Struve,  Fraunhofer, Fellowes and Henderson:

Parallax, Alan W. Hirshfeld, W. H. Freeman 2001

This is an excellent reference for 19th centruy astronomy:

The History of Astronomy from Herschel to Hertzsprung, Deiter B. Hermann, Cambridge 1973

This continues to be very valuable:

Cambridge Illustrated History of Astronomy, edited by Michael Hoskin, Cambridge University Press 1997.

This link provides a look at the largest telescope of the 19th century: