found: Work cat.: 2002387834: Filippini, C. Paliotti dipinti, 2001.
found: New Catholic ency., c1967(Altar: "Besides cloth, there were also metal and wooden frontals")
found: Hoefler, R.C. Designed for worship, c1963:p. 35 (frontal: the front panel of the altar, historically made of wood richly painted or carved with symbols)
found: Petersen, J. Altar frontals, 1962:p. 4 (the frontal was not necessarily of a textile material, but could be made of precious metals, canvas, thin wood, or leather)
found: AAT(altar frontals UF altar facings, altar fronts; Carved decorated, embroidered or otherwise decorated panels or hangings covering the front of a Christian altar)
