Master Craftsman’s Certificate of Pvel Kolev, which allows him to practice the building trade and masonry. 1905

Master Craftsman’s Certificate of Ivan Bonev to practice the building trade. 1927.

Master Craftsman’s Certificate of Kancho Nenov Kanchev to practice the plastering trade. 1929. 

Certificate of Pavel Kolev giving him the right to construct buildings up to 20 000 Bulgarian Levs. 1912.

Testimony of master Georgi Kolev about the quality of his work. 1901