Because of the topics presented individual censuses may include covers that may be included in one or more other censuses. This is purposeful to ensure that a specific topic is completely covered.
Census numbers (CN) for this census have an alpha prefix such as “A” to differentiate them from provisional censuses.
CSA Catalog numbers are abbreviated by using the last three characters(or more) of a catalog number. Thus NEW-LA-A03 is abbreviated A03.
This section makes extensive use of abbreviations. They are as follows:
DC – double circle hsp – handstamp(ed) mrk – mark(ing) pmk – postmark
prv – provisional(s) w/YD – with year date
The following markings are shortened in the descriptions of covers.
PD 2 CTS / N. O. P. O. – PD 2 CTS
PD 5 CTS / N. O. P. O. – PD 5 CTS
PD 10 CTS / N. O. P. O. – PD 10 CTS
J. M. RIDDELL, P. M. – RIDDELL
REV – reverse
UL – upper left UC – upper center UR – upper right
CL – center left CTR – center CR – center right
LL – lower left LC – lower center LR – lower right