My friend, Jeff Berry, (co-)author of the Qadardalikoi Tekumel wargame rules set, sent me a copy of those rules, and a printed scan of mimeographed, pre-TSR Empire.
Jeff also painted a paler version of my N'luss character; her 'sister' appears in his game.
--I hope to have scans and photos to post next day or three.
[Beyond beaming,] all I can say to folks who suggest that Old School was 'simple' or 'rules-light', clearly were kept in very small (and strange) circles.
--Details on true settings make the play more tangible, and the game-reality more concrete and 'alive.' Tekumel, Glorantha, and (the Silver-, or Bronze-age) Jorune, being those that leap readily to mind.
...more cowbell!