<P> For an established religious purpose; When a person under twenty - one years of age is accompanied by a parent, spouse, or legal guardian twenty - one years of age or older; For medical purposes when purchased as an over the counter medication, or when prescribed or administered by a licensed physician, pharmacist, dentist, nurse, hospital, or medical institution; In a private residence, which shall include a residential dwelling and up to twenty contiguous acres, on which the dwelling is located, owned by the same person who owns the dwelling; The sale, handling, transport, or service in dispensing of any alcoholic beverage pursuant to lawful ownership of an establishment or to lawful employment of a person under twenty - one years of age by a duly licensed manufacturer, wholesaler, or retailer of beverage alcohol .) </P> <Tr> <Th> Maine </Th> <Td>? </Td> <Td> 21 1969: Lowered to 20 </Td> <Td> 1972: Lowered to 18 1977: Raised to 20 </Td> <Td> 1985: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Maryland </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1974: Lowered to 18: for beer and wine 21: for liquor </Td> <Td> 1982: Raised to 21 with grandfather clause for those born June 30, 1964 or earlier </Td> <Td> 21 (however anyone can drink when parents, spouses, teachers are present) </Td> </Tr> <Tr> <Th> Massachusetts </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1973: Lowered to 18 1979: Raised to 20 in 1979 (Apr 16) </Td> <Td> Raised to 21 in 1985 </Td> <Td> 21 </Td> </Tr>

When was the drinking age of 21 established