Two on <CG>:

(1) Euwe vs E Eliskases, 1935

(2) E Eliskases vs Euwe, 1935

and one on <CT>:

(3) http://chesstempo.com/gamedb/game/6...

(1) Euwe-Eliskases 0-1 D57 (42) CG
(2) Eliskases-Euwe 0-1 D45 (32) CG
(3) Eliskases-Euwe 0-1 D29 (40) CT

Did Black really win each one?

(2) is given as <training/Amsterdam> (3) is given as <Amsterdam NED>

It's funny, if Eliskases was helping Euwe train for the 1935 match, he later went on to help Alekhine in 1937:

Game Collection: WCC: Euwe-Alekhine Rematch 1937

Euwe reportedly also played a secret 10-game training match against Spielmann:

http://www.chesshistory.com/winter/... (see CN #4174)

I did find this (unfortunately again w/o other sources):

<Today I'll tell you about his ongoing spirit of collaboration with chess worldwide. Since very young, in 1935, became Eliskases analyst Max Euwe in the match the Dutch wrested the title from Alexander Alekhine. For him rematch in 1937, Alekhine contracted with Eliskases and won that famous match for the wide scorer won 10, 4 losses and 11 boards, showing that his previous defeat was only a setback in his brilliant career. This was the last match that Alekhine played for the world crown. Deep in the art of chess Knower, the Knight Eliskases has been considered one of the most notable theorists of all time. His wealth of knowledge of the secrets of the board, have earned global respect and consideration>

<Hoy te voy a contar sobre su permanente espíritu de colaboración para con el ajedrez de todo el mundo. Ya desde muy joven, en 1935, Eliskases se convirtió en el analista de Max Euwe, en el match que el holandés le arrebató el título a Alexander Alekhine. Para le revancha, en 1937, Alekhine contrató los servicios de Eliskases y ganó aquel célebre match por el amplio scorer de 10 ganadas, 4 perdidas y 11 tablas, demostrando que su derrota anterior sólo había sido un traspié en su fulgurante carrera. Este fue el último match que Alekhine jugó por la corona mundial. Conocedor profundo de la técnica del juego de ajedrez, el Caballero Eliskases ha sido considerado como uno de los teóricos más notables de todos los tiempos. Su bagaje de conocimientos de los secretos del tablero, han merecido el respeto y la consideración mundial>

http://www.heldercamara.com.br/rona...

The following site duplicates my earlier Spanish ref on this, but is signed by an author - Raúl Grosso

Please see my post here:

Alekhine - Euwe World Championship Match (1935) (#173)

Apparently Raúl Grosso published a print book (in Spanish) about Elikases.

< Eliskases - Caballero del Ajedrez,

Soppe & Grosso,

Editorial Municipal de Córdoba, 1992, Alejandro Falcov>

Added to Gambit Books on Oct 3, 2004:

http://www.gambitchess.com/semi/db_...

That would be the most likely place to check for the games in print.

So I would definitely say that Grosso gets promoted to an independent source.

Another, outside chance, would be to search these books:

http://www.worldcat.org/title/erich...

http://www.worldcat.org/title/jogo-...

http://www.worldcat.org/title/erich...

That is, if anybody could find them.

You could also search Delpher Kranter - the Dutch newspaper database.

http://www.delpher.nl/nl/kranten

For instance:

<De Indische courant 17-08-1935>

http://www.delpher.nl/nl/kranten/vi...

<Dr. Euwe trains are now very seriously Splelmann, Eliskases and Flohr, respectively. combihatoir, tactical and theoretical.>

Which provides solid confirmation of the collaboration between Eliskases and Euwe in 1935.

* * * *

Note that even Spanish language sites should turn up when doing a google search on the names/year (<Eliskases Euwe 1935>). So it's unlikely that we've missed the more obvious potential sources of the score.

It's too bad that we can somehow easily query <CG> to find out who submitted the game, and when. Oh well, I can't get that, and you don't get to find the game source in print...

Alekhine - Euwe World Championship Match (1935) (#182)

I went through the Dutch papers for 1935. Definitely happened, either July or August, in Amsterdam.