Yesterday (March 24), Al Paslow, a member of the Antique Telescope Society, and members of a demolition crew opened a time capsule, a small brass box sealed with solder, that had been placed inside a cornerstone of the now-demolished Brashear Telescope Factory building on the North Side of Pittsburgh. The building, built in May of 1886 and added to the National Register of Historic Places in 2012, was originally the home of the John A. Brashear Company which had manufactured hundreds of telescopes and precise scientific instruments for observatories and scientific institutions throughout the world, in the latter part of the nineteenth century and the first half of the twentieth century.

More: http://spacewatchtower.blogspot.com/2015/03/brashear-telescope-factory-time-capsule.html