Check it out - there are a couple. The first one is for the week of Aug. 8 - 14th for back to school shopping. NO sales tax on clothing & shoes items priced $100.00 or less. (each)
http://www.comp.state.md.us/special_session/SalesUseTaxBulletin_TaxFreePeriod.pdf
http://www.comp.state.md.us/special_session/SalesUseTaxBulletin_TaxFreePeriod.pdf