1. Rumors of Existence (Hancock House, 2005)
  2. Runaway Girl (Runaway Rockstar: Book 1, Butterfly Books, 2017)
  3. Runaway Heart (Runaway Rockstar: Book 2, Butterfly Books, 2018)
  4. Runs in the Family (Strigidae Publishing, 2016)
  5. Rustler's Trail (Zebra, 1988)
  6. Rusty Journals (article in Classic Toy Trains, n.d.)
  7. Rylan the Renegade (Matterhorn the Brave Series #6)
  8. Safe at Last: True Stories of Horse Rescues (Filter Press, 2015)
  9. Salvation and Doom: The Cathardi Prophecy (Wolfstar Publishing, Nov. 2023)
  10. Sammi Is My Name (CreateSpace 2014)
  11. San Lorrah Shootout (Zebra, 1986)
  12. Sand Stories: Recollections of Life around the Great Sand Dunes (Friends of the…
  13. Sariah’s Big Day! Author: Dr. Theresa Newsom, Illustrator Mr. Waleed Khan (Amaz…
  14. Savages (2nd edition, HellBound Books Publishing LLC, 2018)
  15. Savages (Assent Publishing, 2014)
  16. Scale Up Your Profits!: The Secrets of Online Marketing (2019)
  17. Scapescope (Ace paperback, 1984)(story is set in the NORAD Cheyenne Mountain u…
  18. Scenic Driving Arizona: Including the Grand Canyon, Monument Valley, Sedona, an…
  19. Scenic Driving California's Pacific Coast: Including San Francisco, Monterey, B…
  20. Scenic Driving Colorado: Exploring the State's Most Spectacular Back Roads (Glo…
  21. Scenic Driving Connecticut and Rhode Island: Exploring the State's Most Spectac…
  22. Scenic Driving Massachusetts: Exploring the State's Most Spectacular Byways and…
  23. Scenic Driving New England: Exploring the Region's Most Spectacular Back Roads …
  24. Scenic Driving New Hampshire: Exploring the State's Most Spectacular Byways and…
  25. Scenic Driving Vermont: Exploring the State's Most Spectacular Byways and Back …
  26. Scenic Driving: Arizona (3 editions, Falcon Publishing, 1991)
  27. Scenic Driving: California (2 editions, Falcon Publishing, 1992)
  28. Scenic Driving: Colorado (3 editions, Falcon Publishing, 1993)
  29. Scenic Driving: New England (4 editions, Falcon Publishing, 1994)
  30. Scenic Routes & Byways: California's Pacific Coast (Globe Pequot Press/Falcon G…
  31. Scenic Routes & Byways: Colorado (Globe Pequot Press/Falcon Guides, 2013)
  32. Scenic Routes & Byways: New England (Globe Pequot Press/Falcon Guides, 2012)
  33. Schaum's Outline of Abstract Algebra (McGraw Hill, 1999)
  34. Schaum's Outline of Theory and Problems of Advanced Calculus, 2nd ed. (co-autho…
  35. Schism (Book 2, The Alchemist Saga, CreateSpace, March 2018)
  36. Screechers (with Kevin J. Kennedy, Independently published, 2019)
  37. Season of Fire (Remnants: Book 2, Blink, 2016)
  38. Season of Glory (Remnants: Book 3, Blink, 2016)
  39. Season of Wonder (Remnants: Book 1, HarperCollins Christian Pub., 2015)
  40. Seasons of the Raptor: One Year Photographing Colorado's Raptors (2022)
  41. Sebastian: The Cat That Never Shaved (2014)
  42. Second to None (2nd ed., 2017)
  43. Second Year Setbacks (Hunter Academy: Book 2, 2021)
  44. SECRETS (Self-published, 2016)
  45. Secrets of the Professional Freelancer (as Bev Walton-Porter)(Triple Crow Publi…
  46. SECRETS: Past Unveiled (Self-published, 2017)
  47. Sedendum (Independently published, 2020)
  48. Seeing the Invisible (Broadman Press, 1987)
  49. Selah (The Sugar Baron’s Daughters: Book 3, Bethany House, 2020)
  50. Self Destruct (Destroy Series book 1)(2013)