"A Solid Leader for Solid South". LIFE. Vol. 40, no. 21. Chicago: Time. May 21, 1956. pp. 31–35. Page 34 "We're pretty much yellow-dog Democrats here," said an Arkansan last week, explaining the state would vote Democratic even if the party nominates a "yellow dog."
Morton, Julius Sterling (August 11, 1898). "In Old Times". The Conservative. 1 (5). Nebraska City, Nebraska: Morton Print. Co: 6.. The Republican party of Nebraska, when its nomination to a state office was equivalent to an election, boasted that it could run "a yellow dog" for Governor and beat the best and ablest Democrat named for that office.
mississippidemocrats.org
"Yellow Dogs". Mississippi Democratic Party. Retrieved December 10, 2017.
