of 1973 (U.S.) List of number-one adult contemporary singles of 1973 (U.S.) List of number-one singles from the 1970s (UK) References 1973 singles Tony Orlando songs Johnny Carver songs Billboard Hot 100 number-one singles Cashbox number-one singles Irish Singles Chart number-one singles Number-one singles in New Zealand Number-one singles in South Africa Oricon International Singles Chart number-one singles RPM Top Singles number-one singles UK Singles Chart number-one singles Songs written by L. Russell Brown Songs written by Irwin Levine Bell Records singles Songs about buses Songs about prison Songs about trees