This blog is for current users and others interested in KF Modified.  KF Modified is the short form for KF Classification Modified for Use in Canadian Law Libraries and is a classification suitable for legal collections in any common law library.  Generally, KF Modified organizes legal information by topic first and then by legal jurisdiction.  In the common law context this helps facilitate legal research by allowing easy reference to resources in a topic area across jurisdictions.  You’ll find more information about KF Modified, including its history, usage tips and future directions in the blog posts themselves.  If you have any questions please feel free to drop me an email:  tknight at osgoode dot yorku dat ca.

F. Tim Knight, Editor KF Modified



  1. Ted Tjaden said,


    Does AACR2 allow any flexibility for cataloguers to use the official US and Canadian postal code abbreviations for states and provinces?

    The use of “Ont.” as in “Aurora, Ont.: Canada Law Book” is not so pretty due to the extra period and colon. “Aurora, ON: Canada Law Book” is much nicer.


    Would you retroactively change older records to clean up the catalogue?

    Ted Tjaden

    • F. Tim Knight said,

      Ted: In AACR the use of province, etc. in the publishing statement is not considered a required element for resource description. It’s really used “if considered necessary for identification”, so for example as a qualifier to distinguish between say London, Ontario and London England. As far as the form used, that is prescribed in the abbreviations appendix of AACR which is not based on postal codes. If you want to look it up check out AACR1.4.

      I’ve seen postal codes used here and there. You’ll also find unabbreviated fully spelled out examples. As is often the case this boils down to local practices/policies and good old “cataloguer’s judgment”. The most importatn thing in my mind is that it is dealt with consistently in your own shop, but I wouldn’t sweat this too much and I would definitely not take time to change this in older records. Much more important things to worry about. 🙂

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