German Colonies Collectors Group Contact: Oliver Wyrtki, 203 Mill Xing, Yorktown VA 23693-3805. Email: germancoloniescollectorsgroup@gmail.com. Publication: Vorläufer, published semi-annually. Sample copy $5. Annual dues $18 (US, Canada and Mexico), $26 international (airmail). Website: http://www.germancoloniescollectorsgroup.net/
Germany Revenues Study Group Contact: Jim Kellogg, PO Box 5251, Q Supercentre, Mermaid Waters, QLD 4226, Australia. Email: jim@aquakleen.com.au Free membership. Join online: www.groups.yahoo.com/group/GERMANY REVENUES
Stadtpost Study Group Contact: Peter Rogers, 31 Springfield Road, Bury St. Edmunds, Suffolk 1P33 3AR, UK; email: peterrogerscsc@aol.com
Color Study Group Computer identification of the various stamp colors and shades. Various communications via emails. Contact John Cibulskis, email: jcibulskis@sbcglobal.net
DDR Study Group. For all information contact Rudi Anders, rudi.anders@iphouse.com or Richard Slater, richandpam@iinet.net.au
Third Reich Study Group Contact Dr. Christopher Kolker, email: ctkolker@mail.com