Troll Story Books with Cassettes 2 Book Oregon Trail and Pioneers

My students in elementary school would love to grab a seat in my reading corner and pop on those big earphones to listen to Troll stories from cassettes! I know technology is far more advanced, but kids loved being able to drown out the entire room, and I loved that they were using their minds and imagination to fill in the blanks. These are in great condition. One book has some damage on the edge, and the pages show they came through the 80s. These have not been tested in a cassette recorder. Thanks for looking. Message with questions.