Hike it Baby by Ashanti Hodges.
100 outdoor adventures across the United States that you can take with babies and toddlers (really!), along with everything you need to know about exploring the natural world. This book helps moms and dads get out there in their comfort zone, yet feel like hardcore adventurers.
"An Inspiring and practical guide connecting the next generation to the joys, wonders and freedom of nature. I wish this book could go home with every family leaving the maternity ward." -Florence Williams, author of The Nature Fix