Established in 2006 by Dr. Debbie Reese of Nambé Pueblo, American Indians in Children's Literature (AICL) provides critical analysis of Indigenous peoples in children's and young adult books. Dr. Jean Mendoza joined AICL as a co-editor in 2016.
Through child_lit (see info about the childlit listserv here), I became acquainted with Debby Dahl Edwardson. I subscribed to child_lit in 1995 or thereabouts. Sharing my perspective---one that challenges a lot of what gets published in children's books---I encountered a lot of resistance from people on child_lit.
Since then, there's more people on child_lit who are willing to challenge the status quo. Debby is one of them. I'm glad to see she's started a blog. Take a look, and bookmark her site.