The title of the Wehrli overture must sound rather strange to anybody who doesn't speak Swiss German. 'Chilbi' refers to a funfair and 'Zite' simply means times. The only other orchestral piece by this composer that I am aware of is the lovely Sinfonietta for Flute, Piano and strings, op. 20 (1921). It came out on a Jecklin CD (Szene Schweiz JS 297-2) in 1993 - together with the Symphony no. 8 'Seldwyla' by Robert Blum (1900-1994) and the Double Concert for Piano, Violoncello and Orchestra by Peter Mieg (1906-1990) and may still be available from the Mieg foundation:
http://www.petermieg.ch