A Purple Martin Journey: My 25 Years as a Martin Landlord and Product Developer chronicles the extraordinary life of Andrew Troyer and details how to attract, care for, manage a thriving purple martin colony, and SO much more! A fascinating book chock full of full color photos. This hardcover book describes what every purple martin landlord needs to know. It explains how to attract, manage and take care of a purple martin colony. The book is written by Andrew Troyer who developed the wildly popular Troyer Gourds and the T-14 purple martin house. This 208 page book has over 250 color photos and makes a great gift. Size is 9 by 6.