sirrogercasement

Sir Roger Casement 1864 - 1916, and this photo is 1920. Hmmm...
en.wikipedia.org/wiki/Roger_Casement

There's a Scarborough & co based out of Milford, NH, that would be old enough. They seem to have been a soap company, so this may not be them.

The post office sign reads "River Junction, FLA", the photo is catalogued "River Junction, Florida" by the NLI, and the text on the back of the photo reads "River Junction, Florida"

Here's a transcript of a newspaper article on the history of River Junction, Florida:

fl-genweb.org/gadsden/Social-1927_Sep8.html

With those biodegradable building styles, it could easily be round here and we'd never prove it: goo.gl/maps/14Ao4vpe1cpc5ke98

Perhaps the photo was taken around here?
www.google.ie/maps/@30.6847376,-84.8413201,3a,75y,295.83h...

"Sticky Backs" rings a bell ...
www.stickybacks.uk/definition.asp

And in Dublin -
www.stickybacks.uk/lloyd.asp

The second link above suggests Sticky Backs were at 30 Grafton Street from 1906, therefore an earliest date for the photo. The (ghastly) hats look more 1906 than 1916.

Edit - Later on the article suggests "Mr Henry L Lloyd (1910-1919)"
So earliest 1910 ??

The DIB says (my emphasis):
Casement, Sir Roger David (1864–1916), humanitarian and Irish nationalist, was born 1 September 1864 in Sandycove, near Dublin, youngest child among one daughter and three sons of Roger Casement, retired army officer, and Anne Casement (née Jephson).

In the archive, I see Letters from Roger Casement to his sister Agnes Newman and his cousin Gertrude Bannister, and also essays by Roger Casement Senior, and three letters by him including one on the Siege of Paris, 1850-1916.

From more nli letters, his brothers are Tom and Charlie.

Boa Viagem Island – Niterói

Suck Diesel What? How? Where?

Photographer André-Charles Armeilla worked in Rio between 1903 and 1913
(born in France - died in Rio de Janeiro, 1913)

search.worldcat.org/title/1253445693

maps.app.goo.gl/P4FkPGin2nfeVAQU9
And www.brasilcult.pro.br/leilao/rio_antigo/leilao02_a.htm

National Library of Ireland on The Commons

www.brasilcult.pro.br/leilao/rio_antigo/leilao02_a.htm