That's interesting information ! I don't know whether there are MORE of these 'Unit Histories' around ? Haven't seen this one though ! Why do you mention a 'series', is there any mention of other such booklets as the one you illustrated (ref. 612th) ? These so-called unit histories were more common with smaller units, while the more known large units had their 'stories' published in the widely distributed G.I Stories of the Ground, Air, and Service Forces in the European Theater, issued by the Orientation Section, Information and Education Division, ETOUSA.
At the end of the war, or postwar, many smaller units published their own specific WW2 reminiscences which were printed in the liberated and/or occupied countries, such as France, Belgium, and Germany. Of course, some units published more complete books after the war specifically destined for the Veterans' Associations.
Bag, Delousing, Quartermaster Stock No. 27-B-208 - a sytnthetic or resin coated bag for the fumigation of clothes. Clothes were placed in the bag and a chemical glass ampoule was placed in the appropriate pocket. The bag was then tied tightly and the ampoule crushed, allowing the gas to spread in the closed bag. After a while, the bag was opened, the clothing removed, shaken well and brushed. Because of the fumes, the bag was to be opened only ourdoors or in a well-ventilated space. The bag was used by QMC troops and Medical personnel, for disinfecting clothing of RAMPs, DPs, and German PWs. I don't think it was ever used by GRS people ...