Anyone have a quik-n-EZ history reference on the use of glass blocks in
sidewalk vaults? I know they're prevalent in NYC (in both sidewalk vaults
and at least one subway station that I've been through), but I found some
in the middle of North Dakota (!) and am wondering when they might have
been put in -- the building was originally a brick bank structure (1883),
but has been modified extensively. Anyone doing restoration of these in
the Midwest?
Churchmouse