The Last Stronghold (1989) has a chapter devoted to traditions of Christmas and the New Year. Since many of these traditions had died out in Scotland this account, based on tape-recordings, gives a rare insight into the older Scottish traditions.

'Scottish Customs of Christmas and New Year' in University of Edinburgh Jounral, Dec. 1994.
The Burning of the Clavie, Tocher 44, 1992 (based on my fieldwork with Dr Emily Lyle)
'The Flambeaux' in Remembered in Perthshire...