Bulgaria: drawings Maps and drawings relating to Bulgaria including drawings showing the import and export from Bulgarian ports, the distribution of cattle, maize, wheat, vineyards, forests, ethnicity and wheat, as well as maps which detail the geology of the country, changes in population between 1926 and 1934, and the extent of changes in place names. There are also graphs relating to railways and their cargo and hand written notes relating to the maps and drawings. 1935