I found a set of lowball glasses with 'Ethyl Gasohol' advertising around the glass. These must have been giveaways at gas stations...?? I understand they were made by a company called 'Cora'?

Does anyone have any information on Cora? I cannot seem to find much info for them. I am assuming they are no longer is business? Does anyone know the time frame these were produced? I'm guessing mid-century.
Does anyone know where in the country the company was ? Thanks!!!