Thiruvalla copper plates

Thiruvalla copper plates, also known as the Huzur Treasury Plates, are a collection of medieval temple committee resolutions found at the Sreevallabha Temple, Thiruvalla, Kerala. The collection of plates, engraved in old Malayalam language in Vattezhuthu with some Grantha characters, can be dated to 10th and 11th centuries AD.
The collection consist of forty three plates with writing on both sides, but more than half a dozen plates are missing. The contents of the copper plates belong to different periods. The plates were collected, rearranged and edited at a late date. The plates are considered as a treasure trove of information about medieval temple rituals, deities, festivals, castes, professions, personal names, plot names, and prices.
The plates were first published in "Travancore Archaeological Series" by T. A. Gopinatha Rao, under the title "The Huzur Treasury Plates". They were originally kept in the Sreevallabha Temple, Thiruvalla (now with Archeological Department of Kerala).