IRS Pub. 463 - Travel, Entertainment, Gift, and Car Expenses IRS Pub. 17 - Your Federal Income Tax IRS Pub. 1542 - Per Diem Rates IRS Pub. 519 - U.S. Tax Guide for Aliens IRS Pub. 597 - Information on the United States-Canada Income Tax Treaty IRS Pub. 54 - Tax Guide for U.S. Citizens and Resident Aliens Abroad