Sign language from What I saw in New York; or, a Bird's-eye view of City Life (1851) published by Joel Ross. Original from… Free Image from public domain license 
Vintage European style atlas engraving from Chambers's Alternative Geography Readers by
William Chambers (1898). Original… Free Image from public domain license 
Sign language for letter A from What I saw in New York; or, a Bird's-eye view of City Life (1851) published by Joel Ross.… Free Image from public domain license 
Sign language for letter C from What I saw in New York; or, a Bird's-eye view of City Life (1851) published by Joel Ross.… Free Image from public domain license 
Sign language for letter E from What I saw in New York; or, a Bird's-eye view of City Life (1851) published by Joel Ross.… Free Image from public domain license 
Sign language for letter D from What I saw in New York; or, a Bird's-eye view of City Life (1851) published by Joel Ross.… Free Image from public domain license 
Sign language for letter B from What I saw in New York; or, a Bird's-eye view of City Life (1851) published by Joel Ross.… Free Image from public domain license 
Vintage European style atlas engraving. Original from the British Library. Digitally enhanced by rawpixel. Free Image from public domain license 
Sign language for letter F from What I saw in New York; or, a Bird's-eye view of City Life (1851) published by Joel Ross.… Free Image from public domain license 
Vintage European style atlas engraving. Original from the British Library. Digitally enhanced by rawpixel. Free Image from public domain license