Term: 1878 – 1881
Liddell served on the Common and Select Councils before winning the office of the Mayor as a democrat. Although, his victory was the result of a public revolt against the excess of the Magee-Flinn Ring. During his term, Temperanceville (Present Day West End), Mount Washington, South Pittsburgh, Allentown, and Birmingham (Present Day South Side) we annexed. Streets were first lit with electricity and telephone service began.