. "Wolkenstayn Orgelbau" . "Walcker organs" . . . "E.F.Walcker & Cie." . "E F Walcker & Cie." . . "E. F. Walcker & Cie." . "Eberhard Friedrich Walcker" . . . . "1854" . "E. F. Walcker & Cie" . "Walcker" . . . "Walcker Orgelbau" . . . . "E.F. Walcker & Cie. Ludwigsburg" . "E.F. Walcker & Sons" . . "Walcker organ" . . "E.F. Walcker" . "Walcker Orgelbau" . "Walcker & Cie." . "E. F. Walcker & Cie." . . . "1780" . "E.F. Walcker and Company" .