In 1970, Don Pendleton's Science Fiction novel, The Guns of Terra 10, was published. It sold well. Even years later, one could walk into most used bookstores and find copies of it. I know I did. And now, 42 years later (eeh gads!) I have published it again. It is available now at Kindle.
Earth is being invaded by treacherous aliens and the gunship Terra 10, the earth’s only hope, is in the enemy’s power!