I only know of two astronomy-only storefronts in the Baltimore-Washington area. If anyone knows of others please send me details: location, Web Page, EMail, results of a visit, etc..
I've been to this store a few times, and all they have are telescopes, telescope accessories, and astronomy-related items: no Egyptian mummy cases, nature videos, New Age Music, etc.. Their Home Page has their business philosophy as well as product lines, directions, and some other good general references and information. No longer on their web site is how they came up with the name: the founders were all in the same fire department company.
I've never been to this store, but I've heard and read nothing but good things about them from others. One of these days when I have some free time ...