Honus Wagner, Napoleon Lajoie, Sherry "Magie", Lewis (boston-nl), and Eddie Plank; the cards all have a red box on the back with their name and a value.
No original baseball card will list it's value on the back. What you have are cards that were included as part of a card collecting kit in the 80's. The Napoleon Lajoie card is a reprint of his 1933 Goudey and the others are reprints of T206 cards. The Wagner, Magie, and Plank are known as the "big 3" and are the 3 most valuable cards in the T206 set.