QUOTES TRANSLATED FROM SPANISH ARTICLE (thanks to Google translate) about SAFC's thrashing of CATALONIA and SPAIN
Sunderland was one of the leading teams in England in the first half of the 20th century. They were one of the most sought-after clubs from England to play exhibitions and friendly matches. Spain was one of the places where they left their mark, although their trips to the Iberian peninsula left a bad impression in the British press who showed Spain as an ordinary and vulgar country where minimum safety and health conditions for athletes were not respected.
The Sunday Sun reported the following when the team got back to England:
"Exhausted, malnourished, dehydrated and deeply affected by what they had experienced in Spain. This is what the Sunderland players said about their second tour of the Iberian Peninsula".
"The footballing skills of Spanish teams are the least of the obstacles to overcome, with there being a great loss of physical capacity when training in exhausting heat".
"Matches are played against teams solely interested in bringing down the prestige of Great Britain."
"The stadiums have hospitals for referees due to the behaviour of the fans, who normally cause injuries with stones or kicks - fortunately we had no problems with the referee, who allowed a goal by Gallacher even though the rival goalkeeper disputed the ball had crossed the goal line."
It must have been quite an experience for the the likes of our Raich and our Bobby. Sounds a bit "tasty" as they were very critical of Spanish food, weather and customs, but I bet it was all down to too much San Miguel!! (Mind you some Brits still moan that this is still the case over in Spain

).
PS the photo in the article is definitely the old Olympic Stadium in Barcelona, recognise the tower thing in the background.
The article also mentions the first tour the previous season, to help the Spain national team prepare for the 1934 world cup. Checking Statcat, we played the Spanish XI 3 times, winning one and drawing two, Jimmy Connor scoring 4 goals over the 3 games.
.....And Raich Carter didn't play in any of those games, otherwise we'd have thrashed them.
STATCAT reports further info eg games were played at Valencia Madrid and Bilbao - which may explain some of the rumoured connections between SAFC and Atletico Bilbao