I didn't record my Traditional IRA contributions. Is there a website that lists IRA contribution limits for past years?
Visit the Congressional Budget Office's Online Tax Guide, which summarizes IRA contribution limits and phase-out ranges for every year from 1974 onwards.
You may also want to ensure that you file Form 8606 for any year in which you made non-deductible contributions to your Traditional IRA.
For further reading, check out Correcting Ineligible (Excess) IRA Contributions - Part 1 and Part 2.
This question was answered by Denise Appleby