Copied from another thread (edited slightly for readability, not content - I cannot confirm or dispute the OP's findings:
As of the end of 2018. The ANA endowment appears to consist mainly of their collection and stocks/bonds/other investments. They value the collection at $37,865,973. The other investments are $22,811,800.
Total Revenue is $5,058,000. The main parts are Revenue from Conventions is $1,800,000, Annual Seminars $315,000, Membership $954,000, Contribution $590,000
Total Expenses are $5,800,000