Poppagtor: "We can add John Sebastian to the list of accomplished autoharp players ~ I think....If he played much autoharp with his band The Lovin' Spoonful, not much is very audible in the mix."

You can hear lots of autoharp on various Spoonful songs: "Younger Girl", the opening of "Do You Believe In Magic", "Coconut Grove". Lovely songs, the harp just rings out. It was first hearing them that alerted me to the instrument.
There's a nice picture of Dylan strumming one (c.1965) in Hadju's book "Positively Fourth Street"; it probably belonged to Mimi Farina.

Norman