Original printed open letter addressed to 'Mr Chas. Todd, Officers and Men of the Overland Telegraph Construction Party' offering congratulations on finishing the work. The document is signed by Henry Ayers, CG Balk, Adolph HF Bartels, Wm Hy Charnock, Thos. Elder, GS Kingston, John Lindsay, John Morphett, James H Parr, John Souttar and James T Turnbull. Dated 15th November 1872. A photographic copy is also included.