An endowed care cemetery may have within its confines a section which may be sold without endowed care; provided, that such section shall be separately set off from the remainder of the cemetery and provided that signs are kept prominently placed around such section stating, “This is a nonendowed section.” in lettering of suitable size so it is easily read at a distance of fifty feet. There shall be printed or stamped at the head of all contracts, deeds, statements, letterheads and advertising material used in any connection with the sale of burial space in said section, the statement, “This is a nonendowed section.” in lettering equivalent to a minimum of ten point number two black type. No operator shall sell any lot or interment space in a nonendowed section unless and until he shall have informed the purchaser thereof that the section is not endowed.