https://www.lenconnect.com/news/20191104/author-jim-west-promotes-reading-to-sand-creek-students?

Shoutout from Kids on Fire https://fire.kindlenationdaily.com/2015/09/21/kids-on-fire-magicae-mathematica-series-for-tweens-up/

Libellus de numeros listed among 100 Best Books for 9 year olds https://www.imustread.com/2015/08/best-books-9-year-olds.html