I stopped in the library this afternoon to check the old city directories.
Citizen's Gas Light Company was established in 1874. S.B. Hubbard was the president and the head office was located on Pine Street (now Main) on the present day site of the Bostwick Building. The gas works plant was located where the Park View now sits. However, the gas works plant does not show up in the city directories after 1896, so it must have ceased operation around that time. I don't know when the plant was demolished, but I would not be suprised if it was a casualty of the Great Fire of 1901.
I also checked what was located on the site during the early 1920s. By this time, this area had become automobile central. The Park View site was the home of Atlantic Tire, Super Service Garage, Robertson-Mckee Motor Co., Indiana Truck Corp., Lovejoy Sales Co. and National Plating Workshop. Claude Nolan Cadillac was located on the block immediately to the south and the block immediately to the east. The old red brick warehouses on Orange were used for automobile repair, service, paint and body shops. Also in 1921, the block just to the west was occupied by Marmon Motor Cars.