What type of dog was Jip (in Wash. City)

[LincolnMan]

Fido: you will be interested in this quote I found in The Literary Works of Abraham Lincoln from The Heritage Press:

Abraham Lincoln, July 27, 1848: "A fellow once advertised that he had made a discovery by which he could make a new man out of an old one, and have enough of the stuff left to make a little yellow dog."

So that's how Lincoln got his dogs?