There is no indication in the instructions to the census enumerators that Spirit Dealers were likely to be male only. The wording on the instructions is "Add Sp. Deal. to the trade of all persons who are also engaged in vending Spirits."
In one of the other occupations, it is implied that the people are male - that is miners: "Always add the name of the Mineral in which each person is employed to the occupation in which he is engaged. If only general work add M., as "Coal M.," "Copper M.," "Iron M."". There is a distinct reference to "he".
ADP