Title 17 United States Code (Copyright Act of 1976):

     Section 101, page 1292-1293:

       "Definitions"

          'A "derivative work" is a work based upon one or more preexisting
           works, such as a translation, musical arrangement, dramatization,
           fictionalization, motion picture version, sound recording, art
           reproduction, abridgement, condesation, or any other form in
           which a work may be recast, transformed, or adapted.  A work
           consisting of editorial revisions, annotations, elaborations,
           or other modifications which, as a whole, represent an original
           work of authorship, is a "derivative work".'

          'A "work of the United States Government" is a work prepared
           by an officer or employee of the United States Government
           as part of that person's official duties.'


     Section 105, page 1310:

        "Subject matter of copyright:  United States Government works"

          'Copyright protection under this title is not available for
           any work of the United States Government, but the United States
           Government is not precluded from receiving and holding copyrights
           transferred to it by assignment, bequest, or otherwise.'

   See also:

     Executive Order 12674 of April 12, 1989 (as modified by E.O. 12731)

       Part I--Principles of Ethical Conduct:

          Section 101. Principles of Ethical Conduct, paragraph (n).

            'Employees shall endeavor to avoid any actions creating
             the appearance that they are violating the law or the
             ethical standards promulgated pursuant to this order.'

   See also:

      5 Code of Federal Regulations, 57 Federal Register 35006-35067:

        Section 2635.101, "Basic obligation of public service"


          2635.101 (b)(10):

            'Employees shall not engage in outside employment or
             activities, including seeking or negotiating for
             employment, that conflict with official Government
             duties and responsibilities.'


          2635.101 (b)(14):

            'Employees shall endeavor to avoid any actions creating
             the appearance that they are violating the law or the
             ethical standards set forth in this part.  Whether
             particular circumstances create an appearance that the
             law or these standards have been violated shall be
             determined from the perspective of a reasonable person
             with knowledge of the relevant facts.'