What is associated with: any issued in the us since 1860 are valid to use on letters?

What is referred to by 'any incarnation of vishnu'? What is referred to by 'any indianan'? Based on the clue 'any insect of the order coleoptera', what is the answer? Based on the clue 'any irritable new york baseball player', what is the answer? What is referred to by 'any lab'? Based on the clue 'any land of promise its the biblical name of pales...', what is the answer? Based on the clue 'any lassie in chile could tell you that this dog i...', what is the answer? Based on the clue 'any lock can easily be opened with a hairpin or on...', what is the answer?