Dhumka (Ex. P-2), letter written to the Collector, Rajnandgaon (Ex.P-3), order passed by the Project Officer for Collector, Rajnandgaon (Ex.P-4), letter submitted by the plaintiff (Ex.P-5), demand notice (Ex.P-6), memo dated- 30.08.1988 (Ex. P-7), memo dated 25.9.1982 (Ex.P-8) by Block Education Officer, Rajnandgaon, memo written by concerned President (Ex.P-9) & its receipt (Ex.P-10) whereas the defendant/State to substantiate his case has examined witness namely Y. R Devhare, Dy. Director Panchayat and welfare Department, Rajnandgaon and exhibited the documents i.e. proposal of construction of Secretariat Building dated 4.10.1978 (Ex.D-1), Agreement (Ex.D-2), Stamp paper (Ex.D-4), order dated 13.12.1978 passed by SDO (Ex.D-5), order dated 28.08.1982 (Ex.D-6), Memo of Block Education Officer (Ex.D-7), copy of note-sheet dated 29.11.1982 (Ex.D-8), memo of Collector (Ex.D-9), Appendix “A” (Ex.P-10), Appendix “B” (Ex.P-11), Receipt (Ex.P-12) & order dated 12.3.1979 (Ex.D-13), Estimate (Ex.D-14); Appendix -6 (Agreement) (Ex. D-15); order granting technical acceptance for construction of Sachivalaya Bhavan (Ex.D-16); recovery certificate issued by the Collector, Rajnandgaon dated 13.3.1987 (Ex.D-17); order dated 11.03.1987 (Ex.D-18); Note-sheet (Ex.D19), Estimate (Ex.D-20); Estimate with map (Ex. D-21); Recovery Certificate (Ex.D-22); Recovery Certificate (Ex.D-23).