Some friends of mine spent 3.5 years visiting and photographing all of Seattle's parks. I designed a book for them documenting their project. The book includes information on over 330+ parks arranged in alphabetical order (as well as some funny other business). We funded our project on Kickstarter. I designed a website to help them sell their copies — you can buy it here. Also available in bookstores around Seattle.
We included data we kept track of during the process.