Two early American maps 1762 and 1805 "An Accurate Map of the British Empire in Nth America as settled by the Preliminaries in 1762" by John Gibson published in Gentlesman's Magazine, London 1762; accompanied by "Eastern United States" by Mr. Arrowsmith published by Longman, Hurst, Rees & Orme, September 1, 1805. (Trimmed) paper sizes: H8 1/4" W10" and H10 1/4" W12 1/8"