I work as an independent contractor, and basically use my vehicle as my office. Since my job requires me to travel each day, I keep a majority of my work related items in my vehicle. Unfortunately, this included receipts I have accumulated over the past few years. This past weekend, I visited a friend and noticed that my driver's side window was forced down when I returned to my car. A few items were removed (e.g., CD player face, CD wallet, workshirts, etc.) that I could easily replace. I did not realize that my box of receipts that included thousands of dollars in tax-applicable expenses was taken as well. Many of those receipts consisted of work-related expenditures made payable in cash... What should I do?? If I am eventually audited, I have little in way of proof for my write-offs... I really do not draw cash from the bank, as my cash spending over the last years has come from me selling off personal effects (mainly my old CD and vinyl record collection). Should I call the IRS?