I gave a talk last week in Arizona. Here are some links and resources from that presentation:
Cases I discussed:
Carter v. Washburn/Goldwater class action
Fletcher and Singel, Indian Children and the Federal-Tribal Trust Relationship (I read quotes from pp 945-950)
The ICWA Regulations in final CFR format, 25 CFR pt. 23 (Title 25 regs are put into the CFR every April, hard copies are available in July(ish)).