When you or someone you are caring for is seriously ill, it is recommend that you keep EOBs for five years after the illness or condition is alleviated. If you or the patient is claiming or has claimed a medical deduction, keep the explanation of benefits for seven years.
The earliest writing can be traced to Sumer, in Mesopotamia. This system did not use an alphabet, instead it used pictographs which are symbols representing familiar objects. This type of writing was called cuneiform, or wedge-shaped writing. Egyptians used hieroglyphics, also a pictograph system.
Several centuries passed before somebody had the idea to use writing for different uses from the accounting ones. One of the oldest funerary Sumerian scripts dates from 2700/2600 BC and it indicates the name and the title of the dead person. In 2400 BC, a Sumerian sovereign described his own exploits in a long text.