In this picture, there are two men working on a boat "in progress". A Southwest Boat Corp. building is visible on the left side of the photo. On the right is a building which seems to be the present day "Oceanarium". Ballard's orientation is behind the stern of the vessel under construction.
Ballard, W.H., “Boatbuilding at Southwest Boat Corp.,” Mount Desert Island Historical Society, accessed November 21, 2024, https://mdihs.digitalarchive.us/items/show/13044.Item 13410