You can put a line through any font using the "strikethrough" feature in either Quark or InDesign.

in either Quark or InDesign.

Or even in just about any word processor.

Or even HTML using the <DEL> tag or maynbe its the <STRIKE> tag - anyway something like that.

all the previous posts are probably what you're looking for. But just in case you actually need a font with strikethrough:
http://www.myfonts.com/fonts/selfbuildtype/sb-censor/

To clarify, I am not looking for a line running across the x-height. I am looking for a font with a line through the stroke of an individual letterform - this creates the look of a thin white replica of the Letter imbedded in the letter.

Do you mean incised typeface?

ChrisL

Ohhhh, that's different! Looks like myfonts.com calls them "inline" fonts:
http://www.myfonts.com/browse/keyword/inline/

Yep, I have heard the term "inline," too. Also "handtooled"... Here are some more examples:

http://www.fonthaus.com/products/fonts/list_classification.cfm/FCID/70/

http://bowfinprintworks.com/LinedFontGuide02.html

yes like that. any suggestions?
I like this one: