Persons and agencies authorized to place children; custody, control and visitation by agencies; confidentiality of records.

(a) No person other than the parent, guardian, or relative within the third degree, and no firm, corporation, association, or agency, other than a licensed child-placing agency, may place or arrange or assist in placing or arranging for the placement of a child under 16 years of age in a family home or for adoption. In accordance with the rules and regulations promulgated hereunder, any licensed child-placing agency may accept children for placement in family homes and shall have and maintain care, custody, and control of any such child until returned to the person from whom received or until responsibility for the child is transferred to another child welfare agency or terminated by the order of a court of competent jurisdiction.