Black Cow Bars (Holloway, 1920s)
Holloway was a candy manufacturer that produced the Slo Poke and Black Cow candy bars. Slo Poke bars were a chewy caramel candy bar. Black Cow bars were the same chewy caramel bar covered in chocolate. If you remember these very chewy bars, http://www.oldtimecandy.com sells them. They do have a disclaimer that they are now very different from the original bar. You can also purchase Slo Pokes from the same website.