FLW patent. These prismatic squares can be found in many places all over the City. I've been collecting them for awhile. Here's a close-up of one just around the corner at Maureen's, right here. And another from a recent eBay auction with some FLW information. Cool.
According to City records 241 has bumped around in foreclosure proceedings in the 10 years and has 12' ceilings with approx 11ksf of floorspace. As cool as this building at 900 Genesee and 630 High at Genesee.
Longer post about some of the additional amazingly beautiful buildings on this portion of Genesee between Michigan and Jefferson, soon.