There is a church, The Kirtland Temple, in Kirtland, OH just east of Cleveland that has old china, ceramics and old glass as part of it's external structure. I'll try to remember to photograph it if I'm out that way. The members of the Church collected broken dishes and glass to be put in the plaster so that the temple would be more beautiful. When the temple was finished, the plaster on the outside of the temple sparkled when the sun shone upon it.
Joe, couldnt make out what the embosseing read. I was there the day before and the sun was out. It gave the street a "sparkle" effect. Pretty cool. I stood there looking for what seemed a half hour or so. Most pieces were really small. There were some bigger then a quater but no embosseing. But you know there had to be some good bottles in there. Heck people are pulling some good ones out of the recycle bin these days. No telling what went in there back in the late seventies.
I must say, Baltimore on a whole gets a pretty bad rap, but if you know where to look you can find some real beauty.
Not to mention some great bottles. I remember as a young boy there were several streets in the city that were covered with this "glassphalt" Most have been repaved since. This is one of if not the last one in Baltimore. There probably was a study done I would guess as to the effectiveness, longevity etc. on the "glassphalt". If it exsisted, I would like to see it.