The Rook and Alfil piece is a very old piece, called the 'Ark'.
First mentioned in the 13th century 'Bonus Socium' manuscript, 1275.
Information from V. Nebotov’s Dictionary of Fairy Chess.
G.P.Jelliss talks about this piece in Variant Chess 2, April-June, 1990, showing the mate in 2 problem from the manuscript the Ark was in.
Rook Alfil Fers is in 'ABC Chess', by Jeff 'Cavebear' Stroud, 2001.
You create pieces and 'army2' compounds start with 'rook/alfil/fers' so that piece can be chosen.
Bishop Dabbaba is in 'Chess with Different Armies', called 'Bede'.