This looks like a very early article on the Araucana? What do you think?
Transactions of the First World's Poultry Congress at the Hague-Scheveningen, September 5-9, 1921. Page 45 This is an excerpt, there is more to the article.
https://catalog.hathitrust.org/Record/009126076
TYPE OF AN ANUROPYGIDIOUS (RUMPLESS) COCK AND HEN.
BREED WITH EARRINGS IN CHILI,
by Prof. SALVADOR CASTELLO CARRERAS,
Headmaster of the Royal Official School of Poultry Industry in Spain,
Arenys de Mar — Barcelona.
Proposed scientifieal name: Gallus inauris (Castello).
This breed was discovered by Professor Salvador Castello in Chili in
1914. Shanks and beak are yellow or white. Eye dark red. Comb small.
Tail always absent. It lays rather small eggs, maximum weight 60
grammes and always of a bluish colour or bluish, with small brown spots.
It is found more plentiful in the South of Chili than in Araucaria, but is
found again towards the North, even in the latitude of the Panama Canal,
where it lays eggs, which are always of on a uniformly blue colour.
It was described for the first time in the ,,Special Zootechnies of
domestic fowls” by Prof. Salvador Castello, Headmaster of the Royal
Official School of Poultry industry at Arenys de Mar (Barcelona-Spain)
and it is at the Worlds’s Congress at the Hague, that the abovementioned
professor will present her to the poultry-keeping world.
POULTRY INDUSTRY IN SOUTH AMERICA.
ACCOUNT OF A NEW SOUTH AMERICAN BREED,
by Professor SALVADOR CASTELLO CARRERAS.
Headmaster of the Royal Official School of Poultry Industry in Spain,
Arenys de Mar — Barcelona.