From the state’s legislative website, I was able to determine that Reagan’s 1967 law remained unchanged until SB 1301 was introduced (and passed) in 2002. While I don’t know how to find a clean copy of the pre-existing legislation, the link below will take you to the mark-up version of the first proposed changes to the law. In other words, if you ignore the italics (new provisions) and accept all of the strike-out text (deleted provisions), you should be able to read the law as it was signed by Reagan.
http://info.sen.ca.gov/pub/01-02/bill/sen/sb_1301-1350/sb_1301_bill_20020118_introduced.html
The legislative analysis of the proposed change provides a summary of the 2002 changes, as well as a history of the law and summary description of pre-existing law.
http://info.sen.ca.gov/pub/01-02/bill/sen/sb_1301-1350/sb_1301_cfa_20020627_160952_asm_comm.html
This is a good timeline of California abortion law and court rulings through March 1998 (from Planned Parenthood). There were many changes to funding and related statutes, but apparently the core of the legislation was not changed:
http://www.ppacca.org/site/pp.asp?c=kuJYJeO4F&b=139490
Gotta go out.