The dynamisation of art in the 20th century and its impact on typographie by Michael Mahla As early as the first decades of this century, velocity, machines and films were well-known phenomena. They had a decisive impact on the artists of those days.
The statute of limitations on how far back the IRS can audit (called the Assessment Statute Expiration Date or ASED) varies depending upon the circumstances of the tax return. In most cases the IRS will not go back more than 3 years unless there is something very wrong with the tax return that was filed.
It depends on how accurate your return was, what records you are talking about, etc. It's anywhere from 3 years, to 6 years, to forever. 6 years might be a good idea, especially for collection reasons. In many cases, the IRS will require the last 6 years of returns before working with taxpayers. If the IRS lost your return, you might need to resubmit it--so maybe 6 years generally, and 10 years or longer if you think the return might be incredibly weird.