History
Excellent historical overview of Curies etc. (Nobel)
http://www.nobel.se/physics/articles/curie/index.html
History of
Discovery of Radioactivity
http://www.accessexcellence.org/AE/AEC/CC/radioactivity.html
Biographies of Bequerel, Curies & Rutherford
http://www.accessexcellence.org/AE/AEC/CC/historical_background.html
and
http://www.nobel.se/chemistry/laureates/1911/marie-curie-bio.html
and
http://www.nobel.se/physics/laureates/1903/becquerel-bio.html
and
http://www.nobel.se/chemistry/laureates/1908/rutherford-bio.html
Discovery of alpha
and beta by Rutherford
http://www.rutherford.org.nz/biography.htm
Theory
Rutherford scattering
http://www.phys.virginia.edu/classes/252/Rutherford_Scattering/Rutherford
_Scattering.html
and
http://www.phys.virginia.edu/classes/252/rays_and_particles.html