What did Charley learn from Sam about the stamp and coin store?(answer the question from the chapter The Third Level)

After getting letter from Sam mailed to his in grandfather in 1984 Charley goes to stamp and coin store where he got to know that his friend Sam had bought Eight hundred dollars' worth of old-style currency and he thinks that his friend Sam must have started a nice little hay field and grain business which he had always wished to do. Charley knew that he could not work there as Psychiatrist in Galesburg , in 1894 as it was a peaceful and tranquil time , people did not need any psychiatrist .