Trafford Publishing's wikipedia page claims they like preserving "endangered indigenous languages around the world". It's a pity that Trafford isn't an endangered species however, because the only contribution they have made to authors' lives has been an on-going nightmare of consistent and provable royalty theft.
Still cold-calling unknown authors, Trafford never had the "worst" scam reputation like it's fellow publishing scams, Xlibris and AuthorHouse, but as a Vanity Press, they are still toxic. Trafford never had their 'own' printing machines like they claimed.
DO NOT PUBLISH YOUR BOOK WITH TRAFFORD, they'll steal your money and rob you blind.