Roemer and the First Determination of the Velocity of Light
Burndy Library online publication of 1940 article detailing the background and details of Roemer's work.
dibinst.mit.edu Details

Rundetaarn (The Round Tower)
Astronomy in Denmark: Brahe, Roemer, Hertzsprung.
www.rundetaarn.dk Details

Russell A. Hulse - Nobel Lecture
The discovery of the binary pulsar.
nobelprize.org Details

Starry Messenger
Phase I of the Electronic History of Astronomy, developed in the Whipple Museum of the History of Science at Trinity College, Cambridge. Covers the history of instruments and techniques, themes such as astrology and calendar reform, and biographies of major historical astronomers.
www.hps.cam.ac.uk Details

Telescopes from the Ground Up
The history of telescopes.
amazing-space.stsci.edu Details

The Babylonian Theory of the Planets
A substantial look at the subject, and a review of N. M. Swerdlow's book.
www.maa.org Details

The Cosmic Microwave Background Radiation
Robert Woodrow Wilson Nobel Lecture.
nobelprize.org Details

The Manchester Astronomical Society History
The first hundred years, list of presidents, list of archived documents.
www.mikeoates.org Details

The Society For The History Of Astronomy
Academic and popular topics, with a focus on Britain.
www.shastro.org.uk Details