1955 Double Novel Sci Fi Soft Cover Book

This is two complete novels. One is Conquest of the Space Sea. The other is Galactic Breed. This book is from the 1950's. It is in fair condition. NOTE: the books I am listing for sale online here are just out of a storage unit. They have a musty smell and are aged. They would be great to use for mixed media art as the graphics are very cool.