This catagory is for recording work
that doesn't fit into the R and T numbering systems. This includes
work made mostly before 1994 ( which is numbered 1 + the last two
digits of the year. 1984 = 184. Work after 2000 is numbered 2 plus
the last two digits. 2006 = 206)
of work from the T and R numbering systems can be found here.