Dempster's font here refers to the font used in the logo of Dempster's, which is a bakery brand of Maple Leaf Foods, a major Canadian food processing company founded in 1927.
The Dempster's logo was probably designed based on Goudy Heavyface Condensed designed by Frederic W. Goudy in 1925. The font is a commercial one and you can view more details about it here.
The Goudy Heavyface font identified above is not available for free, please follow the link above and purchase the font. Meanwhile, you can take a look at our collection of fonts for cars, pop music and apparel as well as round-ups of new & fresh fonts around the web.
In addition to Dempster's, It seems we can't find other examples (logos, movie posters, album covers etc.) of Goudy Heavyface typeface in use.