Combined letter box and lamp post. Patented March 9, 1858, by Albert Potts, Philadelphia. [graphic] : The main object of this improvement is to afford increased postal facilities for the deposit of mailable matter by attaching the boxes to lamp posts at short intervals; the convenience of the light from the lamp is a desideratum the advantages of which are evident. The letter box may be constituted of wrought or cast iron of any design required, and adapted to the shaft of any lamp post; it is warranted to be water, thief, and fire proof. For particulars address the patentee as above.