This is a reverse weight font, i.e. the strokes are thicker at top & bottom than at the sides, with "Detroit" or "Mansard" serifs. A couple of fonts with a similar but wider design:
Red Dog Saloon by Font Mesa:
http://www.myfonts.com/fonts/fontmesa/red-dog-saloon/
57 Rodeo by Baseline Fonts:
http://www.myfonts.com/fonts/baselinefonts/57-rodeo/
I trust that there is also an exact match, but I didn't come across it during my quick check.
Don

Thanks Don. It's vexing because I know I have seen that font before.

You're welcome Barry. IIRC I have seen it too. Perhaps it can be found by digging though all the fonts called Tuscan, Western, cowboy etc.?
Don

Got the original name. The font is Helvin (Black) by William H. Page in the 1870s.

Actually, on the same page of the Solotype Catalog (24) as Helven/Helvin is shown Mansard - which has the correct letter widths and middle bar on the E. The Solopedia website indicates it exists digitally as Photolettering/Novel.

Seeing what I can find ...