November 2011 (updated May 2019)
Libraries may use overflow SYS area in 296-343 for list searches, but note these should be emptied ASAP and if MIN needs the slot it may be cleared without notice.

Library	Range
SYS	1 – 2
AUG / UCB	3 – 23
BPL	24 – 38
FAR	39 – 56
FK	57 – 77
LAW	78 – 98
LLR	99 – 105
MAC	106 – 121
MSL	122 – 128
ORO	129 – 193
PI	194 – 215
USM	216 – 265
Featured Lists	266 – 283+
MSL	284 – 295
SYS	296 – 350