Includes the following books published in 2012

#1 The Boxcar Children

#3- The Yellow House Mystery

#13- Snowbound Mystery

#14- Tree House Mystery

#15- Bicycle Mystery

#16 Mystery in the Sand

Also includes

#2 Surprise Island, published in 1977, first time in paperback

#4 Mystery Ranch published in 1989

#44- The Dinosaur Mystery, published in 1995 and a former library book

#77, The Mystery in the Computer Game, published in 2000

Great Adventure 1- Journey on a Runaway Train, published in 2017

Great Adventure 3- The Detour of the Elephants, published in 2017

The Boxcar Children Special #3-

The Mystery at Snowflake Inn, published in 1994

The Mystery on the Ice, published in 1994, hardcover, former library book

A few of these books do have some wear to the covers.