This reading and dictation assignment in the small Anniversary brown manual might appeal to a lot of people today. It is NOT a letter to a business or person. A rarity in this manual because shorthand writers (stenographers) for office work were extremely popular then. It was a starting point to bigger and better jobs or something for girls to do until they were married. Mostly men went to management and women went to personal secretaries or court stenographers (some women went to a type of management position, but most would get married and quit working). Businesses didn't have to pay the stenographers a lot in this "first job" positions and could produce a lot of letters to be mailed to earn money or keep business going (phones were limited).
If you want more non-letters there are other books, or pick up the Functional Method books. Those had a lot of reading in them. Another good one is Speed Studies which had a lot of the reading and writing from the Functional Method books and a lot of articles. Graded readings is another book.