  The productivity of Lick Observatory (LO) is reviewed over the years from
1965 to 2019, a 55 yr period which commences with the Shane 3 m telescope being
the second-largest astronomical reflector in the world, but transitions into
the era of 10 m ground-based optical telescopes. The metric of productivity
used here is the annual number of refereed papers within which are presented
results that are based at least in part on observations made with the
telescopes of LO on Mount Hamilton. Criteria are set forth that have guided the
counting of this metric. A bibliography of papers pertinent to observations
from Lick Observatory has been compiled, and is made available through a NASA
ADS library.
  The overall productivity of the observatory, counting all telescopes, went
through a broad maximum between the years 1975 and 1982. This period also
corresponds to a maximum in productivity of the Shane 3 m telescope. An author
network shows that this period is attended by the introduction of digital
detector systems at LO, particularly at the Shane telescope. Following 1983 the
overall productivity of LO shows a net long-term decrease but with two other
lesser peaks superimposed on that decrease. A slightly smaller peak occurs
around 1996 and is associated with programs taking advantage of CCD
spectrometers at both cassegrain and coud\'{e} foci of the Shane telescope. A
third lesser peak around 2012 can be attributed to a rise in extragalactic
supernova studies originating out of UC Berkeley. Author networks serve to
document the UC astronomical communities that were using LO telescopes at these
peak times. Institutional affiliations of first authors are documented.
