The State Treasurer is designated as the custodian of all funds received by the state from appropriations made by the Congress of the United States or from other sources for the purpose of carrying out any state or federal statutes pertaining to vocational rehabilitation. The State Treasurer is authorized to receive and provide for the proper custody of such funds and to establish such special funds and accounts as may be necessary. He shall make disbursements therefrom for vocational rehabilitation purposes upon requisition by the executive director or when so authorized by the director on behalf of the executive director and upon the issuance of warrants thereunder by the State Fiscal Officer.