The Back Bay section of Boston, MA, also has an alphabetical scheme: Arlington, Berkeley, Clarendon, Dartmouth, Exeter, Fairfield, Gloucester, Hereford, Mass. Av. (well, that's the end of it). What is more, they are parallel -- a thing to be wondered at in Boston.

Bare letters are also used in Washington, except that I Street is usually respelled Eye.

In Hell -- well, I had better not record my speculations here.