Infla Berlin (Hrsg. ) : 75 years Infla-Berlin, Infla library, no. 57.2006, commemorative publication, colour, 179 S., therein amongst other things from Hansmichael jug "local frankings to the breast shield time", 45 S., many Belegabb., Paul-Jürgen Hueske over special tariffs abroad 1933-45. Detlef Pfeiffer over the LATI airmail connection to South America during of the II. WW.