On Christmas day—some sources say Dec. 24—, 1861, John Mullan gave what is said to be the first public lecture in Montana. It was the largest crowd ever assembled at Fort Owen and his topic was Lewis and Clark. Several Mullan historians have mentioned the speech in their works, but this transcriber was unable to find the actual text of the speech. Presented here is the first draft his own transcription. This needs to be further refined by consulting the actual newspapers, or at least better-quality microfiche, as well as viewing Mullan's handwritten manuscript located at the Montana Historical Society, Helena.