Business Transactions of any kind, and as the act and deed of Principal to sign, execute, acknowledge and deliver any deed, lease, assignment of lease, covenant, indemnity, agreement, mortgage, deed of trust, assignment of mortgage, or beneficial interest under deed of trust, subdivision or plat, extension or renewal of any obligation, subordination or waiver of priority, bill of lading, bill of sale, bond, note, receipt, check, evidence of debt, full or partial release of mortgage judgment or other debt, and such other instruments in writing of any kind or class as may be necessary or proper in the premises;