Most 1960s trolls had their hair affixed with glue: it was quick, which meant it was cheap to do. Time-consuming and thus more costly was the rarely seen alternative method of individually rooting each hair (just like a doll's hair). Trolls with rooted hair are hard to come by. I have only one, this 3 inch girl below with long salt & pepper locks. If you look closely, you'll see a little ridge above her brows, where the hairs have been individually rooted.