Information requirements for references.

( March 31st, 2001)
Each reference requires the information which follows.
FieldName Size ValueDescription Limits
1 Category 2 DR Drawings
CA Construction Articles
LA Layout Articles
SP Station plans
TR Track plans
IN Indexes
OA Other Articles
2 Type 2 LO Locomotives Only with DR, CA and IN
CO Coaches Only with DR, CA and IN
WA Wagons Only with DR, CA and IN
RC Railcars Only with DR, CA and IN
TK Track Only with DR, CA and IN
SI Signals and Signal Boxes Only with DR, CA and IN
RV Road Vehicles Only with DR, CA and IN
BU Buildings Only with DR, CA and IN
MI Miscellaneous Only with DR, CA and IN
EL Electrical and Electronics Only with OA
PT Painting Only with OA
WP Workshop Practices Only with OA
SC Scenic Work Only with OA
RO Railway Operation Only with OA
LB Layout Ideas Only with OA
DE Detailing Only with OA
3 Company 4 GWR GWR and constituent parts Up to 1948
SR SR and constituent parts Up to 1948
LMS LMS and constituent parts Up to 1948
LNER LNER and constituent parts Up to 1948
BR BR and constituent parts 1948 to 1993
PBR Post BR period Post 1993
IRE Irish
OTH Private, Industrial, Miscellaneous
FOR Overseas See note 1
4 Pre-Group 9 A refinement of company See note 2
5 Wheels 9 Wheel arrangement Locos only
6 Details 60 Sufficient information to search
7 Scale 9 The scale of the referenced material
8 Magazine 3 As per coverage See note 3
9 Month 3 Number if not monthlySee note 4
10 Year 4 Year of publication See note 5