I always wanted to write a travel blog. Well, not "always". Because I was around before blogs were invented. When I was your age, I had to walk two miles in the snow to send a postcard. But actually I would prefer not to walk, or drive, or fly...I like public transit. Thus ends the short introduction to my travel blog.

Saturday, May 30, 2009

Philadelphia underground labyrinth

Philadelphia Suburban station underground labyrinth. The red/brown line is the Regional Rail. The blue is the Market-Frankford line. The Orange is the Broad St Line. The underground labyrinthe is now more extensive than shown in this old map photographed there.

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About Me

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Dr. Richard S. Wallace formed the ALICE A. I. Foundation in 2001 to promote the development and adoption of Artificial Intelligence Markup Language (AIML) and ALICE free software. Dr. Wallace has a Ph.D. in computer science from Carnegie Mellon.