Comparison of the feathered headdress on one of the Frontal Staff Bearer attendants of the Gateway Tunic (a) to those of Stepped Stelae from the north and east Lake Titicaca Basin, including (b) Qaluyu, Peru; (c) Wiraqocho Orqo, Peru; and (d) Challapata, Bolivia. Drawing by Jennifer and Arik Ohnstad.
Isbell, William H.; Uribe, Mauricio I.; Tiballi, Anne; Edward P. Zegarra, 2018, "Visual database", https://doi.org/10.25346/S6/1B33FN.