I gave up on starting a circus train after buying these cars back in the day.
Included are the following.
(1) K-Line 6-21472 RINGLING BROTHERS Flat Car W/2 Trailers
(1) K-Line 6-22629 RINGLING BROTHERS Scale Stock Car #52
(1) K-Line K763-5301 CIRCUS TRANSPORT RAILROAD O Scale Double Deck Stockcar
$150 for all plus shipping.