Complex sentence: WCM also produced many writers'events such as readings and talks--mainly in pubs and other public places--and produced all but one of the literary events for Glasgow's City of Culture festival in 1990.
Split into simpler sentences: WCM also produced many writers'events such as readings and talks--mainly in pubs and other public places. WCM produced almost all of the literary events for Glasgow's City of Culture festival in 1990.