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Dorothy Garlock
Dorothy Garlock was an American author of over 50 historical romance novels, most of them set in the American West. Many of her books became bestsellers. She also wrote under the pen names Johanna Phillips, Dorothy Phillips and Dorothy Glenn.
Excerpt from Wikipedia, available under CC BY-SA 4.0.
Books

Lonesome river
1987
ISBN 9780445203624
Yesteryear
1998
ISBN 9780446606516