Hi Folks, Came across the above on cloudy nights. Has some info on the Collinder catalogue of open star clusters and some info on the author Per Collinder
if you follow the link below, there is a post with a digital download of the catalogue. May be of interest.
No, It was part of a doctorial thesis by a swiss astronomer studying open clusters early last century.
I'll bet you are familiar with a lot of the more famous ones
Cr 399 - coathanger
Cr 70 - Orions Belt
Cr 69 - Orions Head
Cr 189 - Beehive
There are over 400 in total and from what I remember about being out under a cloudless sky with a scope the ones I stumbled accross were striking.
  