On Saturday 17 May 2025 Hollis did a Meetup and Storytime for young families at the Van Pelt-Dietrich Library of the University of Pennsylvania. She read her book ‘Counting in Green: 10 Little Ways to Help Our Big Planet’ with Q&A and accompanying activities.
See some pictures of the event here!
The day before, 16 May, there was a book signing at the UPenn Bookstore:
The event was co-sponsored by Penn Libraries, Penn Alumni Family Programs and the Association of Alumnae.