Arvon Block, Great Falls ID: 898 | This file appears in: Arvon Block Arvon Block facade, before rehab ca. 2015 | Creator: Peter Brown, MT State Historic Preservation Office, Helena, MT | Date: ca. 2015 | Source: MT State Historic Preservation Office, Helena, MT Download Original File CreatorPeter Brown, MT State Historic Preservation Office, Helena, MTSourceMT State Historic Preservation Office, Helena, MT Dateca. 2015 "Arvon Block, Great Falls" appears in: Arvon Block