This Act being designed to effect a public use and purpose, the City creating the Railroad Terminal Authority may make donations of property, real or personal, or cash grants to the Railroad Terminal Authority from any funds now or hereafter available for that purpose in such amount or amounts as it may deem proper and appropriate in aiding the Railroad Terminal Authority to effectuate the purpose of its creation. Such city, in addition to any powers it has or may have under other laws, shall have power to apply for and accept grants and loans from the Federal government or any agency or instrumentality thereof, to be used for any of the purposes of the Authority and such city or the Authority may enter into any agreement with the Federal government in relation to such grants or loans.