Merrick's Riverside LP, to my knowledge his only solo album in the States, was RLP-12-631, THE OLD CHISHOLM TRAIL AND OTHER TRADITIONAL SONGS OF THE OLD WEST, vcl/gtr, rec. by Kenneth Goldstein in Toronto, May 1956. The songlist was as follows:
The Old Chisholm Trail When The Work's All Done This Fall The Cowboy's Dream The Railroad Corral High Chin Bob I'm A Poor Lonesome Cowboy The Cowboys' Dance Song Cowboy Jack
The Gal I Left Behind Me Roy Bean Little Joe the Wrangler The Lone Star Trail The Strawberry Roan Arizona Boys and Girl Utah Carroll All Day On the Prairie
Merrick was but one in a long line of distinguished Canadian cowboy singers, from Wilf Carter (Montana Slim) to Ian Tyson. His LP was one of the few of its day to feature real traditional cowboy songs done plain, vocal and guitar, no fuss, no feathers.
You may be interested in his brief bio from the LP:
MERRICK JARRETT is a young Toronto folk-singer who has specialized in cowboy songs. His singing career started in 1941 while he was serving as an airman in Newfoundland. After winning an amateur show, he was featured on a weekly radio program from VORG, Gander. Returning to Toronto after the war, he had his own folk-song program on a local station for three years. In 1952, he made his debut on the Canadian Broadcasting Corporation network in a folksong series called "A Man and A Maid" with Joyce Sullivan. In 1956, he acted as both narrator and singer in "Cowboy Songs of the Old West," a 14 week series prepared by Edith Fowke for the CBC. These programs proved very popular and from them were chosen the songs for this recording.