What do you infer from Sam’s letter to Charley?

Sam was a psychiatrist, but he too had his dreams. The description of Galesburg given by Charley infected him. He too wanted to escape from the present world. He did not like to pursue his present profession. He wanted to live in a small town like Galesburg. He wanted to settle as hay, feed and grain businessman. Therefore, he also discovered the ‘third level’ to escape.

The letter he wrote to Charley bore the postmark of July 18, 1894. Probably, it was a first day cover sent to Charley’s grandfather by somebody. However, strangely, the letter was addressed to Charley by Sam. It meant that Sam had really escaped into the past. He had crossed the boundaries of time and space to reach the Galesburg of 1894. Or else, it was Charley who was day–dreaming.