Cora was built by the Falcon Works for the Mid Sodor Railway, where she was a tool van, though she served as Stuart's guard van for a time. She was acquired by the Thin Controller in the sale following the closure of the MSR in 1947. She was used as a guard's van whenever Beatrice was unavailable, though she eventually returned to her original use after Millicent's arrival in 1955.
Skarloey took Cora to rescue Duncan after he got stuck in Rheneas Tunnel for doing "Rock n Roll". When Skarloey took Duncan home, Cora was left in a siding for the workmen to inspect the tunnel. When a documentary was made about the Skarloey Railway, Ada, Jane, Mabel and Cora had the honour of carrying the television equipment and cameras.
Duncan later took Cora to help repair one of Skarloey's coaches after it derailed.
Not much is known about Cora, although it can be assumed she has a good friendship with Peter Sam, being his guard's van during a period of time.
With permission from Christopher Awdry, Cora was featured in the Corris Railway's newsletter, known as the "Corris-Pondent". Cora is depicted as a brake van who worked on the Corris Railway but moved to the Talyllyn Railway.
Rev. W. Awdry's original model of her is presently on display at the Narrow Gauge Museum in Tywyn, Wales.