A secção photographica ou artistica da Direcção Geral dos Trabalhos Geodesicos no dia 1 de dezembro de 1876 : noticia (1876)
Rodrígues, José Julio, Portugal. Direcção Geral dos Trabalhos Geodésicos e Topográphicos. Secção Photographica · Lisboa : Typographia da Academia Real das Sciencias · leaf 105
Photomechanical processes · Photography in geography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from The gentlemens or builders companion : containing variety of usefull designs for doors, gateways, peers, pavilions, temples, chimney-pieces, slab tables, pier glasses, or tabernacle frames, ceiling peices [sic] &c. (1739)](https://img.insideoutlibrary.com/img/200/ia-gentlemensorbuil00jone-70-44.webp)
