Squier, E.G. Map of Honduras and San Salvador, Central America, Showing the line of the proposed Honduras Interoceanic Railway. Map. New York, USA, 1854. Accessed August 10, 2023. https://gallica.bnf.fr/ark:/12148/btv1b53171836z/f1.item.r=Honduras.zoom#.

Squier, E.G. Map of Honduras and San Salvador, Central America, Showing the line of the proposed Honduras Interoceanic Railway. Map. New York, USA, 1854. Accessed August 10, 2023. https://gallica.bnf.fr/ark:/12148/btv1b53171836z/f1.item.r=Honduras.zoom#.