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QuoteI spent a lot of time looking around for images or information. My best single source resource was Potts, 1999. The archaeology of Elam: Formation and transformation of an ancient Iranian state. Cambridge University Press. There is a copy of the first edition on line with academia.edu
There were some great items in the Louvre: cylinder seal impressions, chariot wheel hoops, some stone reliefs.
Ultimately I decided that the Late Bronze Age was a very international era (long range trading tin to make the bronze) so perhaps well equiped Elamites did not look so different from others. More unarmoured archers with head bands as a nod to the much later Assyrian relief sculptures to be sure.
Also, that chariots were not mass produced in factories so they could also look different. And ideally should. But most pulled by armoured horses.