An impressive number of publications was started in 1918 by the Astronomische Gesellschaft (one of the predecessors of the IAU) with this name to include
all known investigations about variable stars at the time. In 1934 a second edition of this publication was issued, containing five extensive volumes.
None of these publications can be found in the scanned literature service of the NASA (see e.g. http://adsabs.harvard.edu/journals_service.html
Because I use the references from this source regularly and would like to offer them to other interested investigators as well, I decided to scan all the copies that I have
and make them available on my website. This publication is a bit different from a standard catalogue: there is not just a table with the latest elements but there is a short review
of all available material for each star.
Every volume consists of three parts usually: Introduction, list of abbreviations and the index of variables. Sometimes there are reviews of the current state of knowledge on
variable star classification at the time. The 3rd volume of the first edition contains a catalogue of all known variables at that moment.
Remarkable for this publication: ALL dates/times are heliocentric, and ALL positions are for 1900.
The following bands have been scanned for the above mentioned purposes:
GuL Erste Ausgabe (first edition) Erster Band (1st volume) 1918 (published by Müller and Hartwig)
GuL Erste Ausgabe (first edition) Zweiter Band (2nd volume) 1920 (published by Müller and Hartwig)
GuL Erste Ausgabe (first edition) Dritter Band (3rd volume) 1922 (published by Müller and Hartwig)
GuL Zweite Ausgabe (second edition) Erster Band (1st volume) 1934 (published by R. Prager)
GuL Zweite Ausgabe (second edition) Zweiter Band (2nd volume) 1936 (published by R. Prager)
The first edition was published by Müller and Hartwig in 1918, 1920 and 1922. Soon it was decided that the publication needed to be extended.
The second edition was started by Richard Prager in Germany in the thirties, he was not able to finish his job due to the war. In 1936 he was thrown out of the job
because he was Jewish. The German obituary speaks euphemistically of an “early retirement” but in the English obituary it is stated that he was thrown in prison
and fled to the UK and later to the US. He was invited to continue his work in Harvard and therefore there is an issue of the Harvard Annals number 111 from 1941
that is the continuation of his work. He died in 1945 just after the war ended and before he could return to Germany.
Please bear in mind that Harvard Annals issue 111 is just as much part of this series of publications as the above ones. But I did not include it here because
this publication was already available in scanned format from the NASA site
Thanks are due to Guus Gilein for making his copy of the first edition available to me and reminding me the website needed updating