While cave paintings, dating as far back as 20,000 B.C. are the first evidence of recorded pictures, true written communication is thought to have been developed some 17,000 years later by the Sumerians, around 3500 B.C.
They are known to have recorded stories and preserved records using simple drawings of everyday objects, called pictogram.
Pictogram- Modern uses
Pictogram remain in common use today, serving as pictorial, representational signs, instructions, or statistical diagrams. Because of their graphical nature and fairly realistic style, they are widely used to indicate public toilets, or places such as airports and train stations.Pictographic writing as a modernist poetic technique is credited to Ezra Pound, though French surrealist accurately credit the Pacific Northwest American Indians of Alaska who introduced writing, via totem poles.