Any two or more authorities may join or cooperate with one another in the exercise, either jointly or otherwise, of any or all of their powers for the purpose of financing, including the issuance of bonds, notes or other obligations and giving security therefor, planning, undertaking, owning, constructing, operating or contracting with respect to a housing project or projects located within the area of operation of any one or more of said housing authorities. For such purpose a housing authority may by resolution prescribe and authorize any other housing authority or authorities, so joining or cooperating with it, to act on its behalf with respect to any or all powers, as its agent or otherwise, in the name of the housing authority or authorities so joining or cooperating, or in its own name.