The good news: Free to a good home.
The bad news: Recorded dimensions of the organ were lost in a hard drive crash. The organ has been dismantled and the building has been demolished. The organ is approximately 26-feet wide, and 26-feet tall. The main body of the organ is approximately 10-feet deep, and the Swell and Choir windchests (stacked) were behind the main body in a tower room approximately 12-feet wide.
It would be possible to reconstruct accurate dimensions. This would involve opening the storage (in the basement of a large church building, and measuring components. There are many photos taken of the organ’s interior during dismantling.
This is an heroic organ, highly regarded and widely celebrated. It was designed and voiced for a very large building. William Middelschulte was organist of the parish, and performed regularly on this organ. The original tubular-pneumatic action is intact.