‘Little House on the Prairie’ Cast Slams Event Organizer for Not Announcing Cancellations [Video]

The cast of Little House on the Prairie is speaking out and slamming organizers of the show’s 50th anniversary events.

Stars of the Western, including Melissa Gilbert, Alison Arngrim, Karen Grassle, Dean Butler, Charlotte Stewart and Matthew Labyorteaux, announced on Sept. 6 that they were cancelling upcoming events in Lyles, TN, Keystone, SD, Branson, MO and Corsicana, TX after attending “poorly organized and executed events” in Connecticut and Pennsylvania.

According to a press release obtained by PEOPLE from the cast on Oct. 1, they also sent a letter to event organizer Jack Bishop and his company Gravel Road Markets LLC.

“Our letter to Mr. Bishop stated the following: ‘This letter informs you that, effective immediately, the undersigned members of the original cast of Little House on the Prairie will no longer support, promote, or appear at any Gravel Road Markets, LLC events,'” the release stated.

They also asked Bishop and Gravel Road Markets to “remove our names and likenesses from …