http://www.denialville.com/little-faucets/

Whats the deal with sinks with two Faucets? ?
I've recently seen two movies where they show a sink with two Faucets. One on each end of the basin. I'd never seen such a thing. Is one hot and one cold or what? Isn't that a little inconvenient if you want warm?
Yes, one is hot and one is cold. These were popular in the 30's, 40's, and even the 50's. It allowed sink manufacturers to only have one style of faucet. It was cheaper. The Single Handle Faucet you have now was not around at that time, so to get a mix you needed a hot valve, a cold valve, more plumbing, and a faucet.
CHEAPER is the answer.