[USMA:27151] Imperial gallon

[john mercer]

Could someone tell me if the U S ever used the imperial Gallon?  Where did the U S gallon come from?  In Canada we haven't used the gallon since around the early eighty's.  I have another question.  When the U S exports goods to Mexico do they export the goods in metric or imperial?  Thanks for all your help.  I would like to say again I really apreciate all the help I get from this site, and all the neat people on it.