There is so much more to the history of Talking Boards - and there are websites and historians that study all aspects of the boards - the design and mechanisms, the planchettes, the experiments, the people who used them. The Historical Talking Board Society is a good start, and also Karen Dahlman.
There have been many books written by those who have used a contact tool to bring messages down and into print. Some using the board as a catalyst until they no longer need the board and can channel the messages directly.
One of the most prolific writers and trance channeler's who first made their initial contact through an Ouija Board, but then went on to trance channel without the use of the board, was Jane Roberts - the Seth books. (21 books - don't quote me) Jane and her husband Robert F. Butts helped bring through the material from Seth - Seth, described himself as an 'energy personality essence no longer focused in physical matter'. But prior to Janes association with Seth, her Ouija Board contact was a 'spirit' called Frank Withers.
I remember seeing that Courtney had read Seth's books and commented on the material - but I cannot remember where that reference is - maybe in a video on the main webpage.
The Ouija Board and Talking Boards, as well the Planchette (automatic writing) has been a tool to bring quite a few significant works to the world. The way I see it , the board is a tool of communication that you can comprehend. The Planchette is the portal devise. Every spectrum of emotional 'colour' can come through that portal, from dark to light. Frequency alignment and intent and purpose, the quality of the questions asked, the information interpretation, the person/s using the tools - so many variables enabling the tool to work.
I don't think the board is a trick, I think its a tool. But I believe the tool has been used and its purpose
misunderstood, especially under the guise of 'entertainment', and that's another story in itself as there were many laws (and still are) in the US that disallowed 'fortune telling', but if its 'entertainment' then the legalities were/are by-passed. It was then put in the realm of theatre - the show, the mystic. When some seriously eye-opening works were being created in conjunction with the use of the Board, it took a long time for people to accept any of it as not being straight from the devil, and only from bad spirits.
Each to their own.
Other countries had been using communication tools such as this to contact spirit and get messages for centuries. Their attitude towards tools as such were not as sensational, their was a level of seriousness to their discipline.
I think contact tools like boards and planchettes (or even remote viewing) are like a bus - you get a good instructor and learn how to drive well, take note of the safety rules, learn the signs, know how and when to use the brake and accelerator and keep to the speed limit you know you can control the vehicle with.
Just some thoughts.