Good Question: Where Can I Find This Light Fixture?

(Image credit: Apartment Therapy)

Hello AT,
I have just purchased my first home (!!) , and I need to replace the light fixtures throughout. The only one possibly original to the house (built in 1961) is shown in this picture- it is in the laundry room. I would love to find a couple more of these light fixtures, to put in my dining room and entry way. Can anyone help me out?? Thanks!

Who out there has a knack for finding vintage light fixtures? Should Jessica turn to ebay, to the Rose Bowl? Chime in with what you know!