[irishjuggler]

BEA’s regional economics staff estimated personal income on a pension disbursement basis for the mid-1990s. This involved removing from personal income several pension- related items and adding back an estimate of pension disbursements. The items that were removed from personal income included employee contributions to pension plans (such as 401(k) contributions) that are now included in wages and salaries, employer contributions that are now included in the category “employer contributions for employee pension and insurance funds,” and investment earnings on pension accounts (dividends,interest, and rent) that are currently included in property income.
http://www.bea.gov/bea/about/fesac/AlternativemeasuresHHincomeFESAC121404.pdf

[Toddsterpatriot]

BEA’s regional economics staff estimated personal income on a pension disbursement basis for the mid-1990s.

Sounds like they're estimating personal income to better take into account pension payouts.

The items that were removed from personal income included employee contributions to pension plans (such as 401(k) contributions) that are now included in wages and salaries,

LOL!! Looks like you just proved my point. Thanks. Got anything else?

Maybe try here, EBRI, no mention of IRAs or 401Ks.

Maybe here? Table 10, 10(2) and 10(3). No mention of IRAs or 401Ks. You'd think if the BEA was adding these back in, they'd at least use a footnote.

Maybe here? Federal Reserve, PDF page 24 of 124. No mention of those accounts here either. It's not impossible that you are correct, just haven't seen any legitimate, reputable sources yet.