The Discovery of the Electron

"The electron has conquered physics, and many adore the new idol rather blindly" 

Henri Poincaré (1907)

After the discovery of the electron and the measurements of its mass and charge (a combination of Thomson's and Millikan's truly ingenious experiments), the next big question was how to describe and understand electrons in atoms and molecules.

Bring on the dream team:

There is a bigger version of the photo with the names of the scientists listed beneath here.