Ключевые слова: abstract, america, american, art, atlas, background, black, black and white, border, cartography, cincinnati, cities, columbus, contour, county, design, doodle, drawing, education, federal, geography, graphic, icon, illustration, isolated, line, map, national, of, ohio, ohio map, outline, science, scribble, shadow, shape, silhouette, sketch, state, texture, topography, travel, united, us, usa, vector illustration, volunteer, white, world,