sentences:  Around 1971 Alvarado joined Hanna-Barbera as a layout artist; he worked on such series as "The Pebbles and Bamm-Bamm Show" (1971), "Wheelie and the Chopper Bunch" (1974), and many others.Alvarado also provided animation and layout work for Film Roman ("Garfield and Friends").Alvarado was the recipient of the 2001 Winsor McCay Award, for his lifetime of achievement in animation, as well as the Animation Guild's 1987 Golden Award.