This building connects to the 1870 Administration Building at the Mare Island Naval Shipyard, but was constructed many years later. However, the front offices, shown here, were adorned with wood doors, similar to those in the Admin building.
(Sidenote: I'm heading out of town today to work on a project for the next 2 weeks. I will have limited computer time, but hopefully I'll be able to post a photo every once and a while. Have a good few weeks!)