Can i ask for documents u/s 32 of mcs act with power of attorney and letter of authority ?

Did you forward PoA of the member (your father) to CHS ? If so, you are entitled and the Secretary shall have to allow inspection and in case does not allow submit representation to MC followed by complaint to Maharashtra Registrar Cooperative Societies.

32. Rights of members to see books, etc.- (1) Every member of a society shall be entitled to inspect, free of cost, at the society's office during office hours, or any time fixed for the purpose by the society, a copy of the Act, the rules and the by-laws, the last audited annual balance sheet, the profit and loss account, a list of the members of the committee a register of members, the minutes of general meeting, minutes of committee meetings and those portions of the books and records in which his transactions with the society have been recorded.