T-1 Post Headquarters ID: 4111 | This file appears in: T-1 Post Headquarters T-1 Post Headquarters. Front to side view of the building, facing northeast. | Creator: James R. McDonald | Date: 1983 | Source: Montana State Historic Preservation Office | Rights: Public Domain Download Original File CreatorJames R. McDonaldSourceMontana State Historic Preservation OfficeDate1983RightsPublic Domain "T-1 Post Headquarters" appears in: T-1 Post Headquarters