As usual, a delayed, small(ish) update courtesy of the Library of Congress, Washington.

10 sheets (1 - 9, plus Blatt 1a) of the 'Mil-geo' editions based on the flagship, German 1:300,000 map  (Übersichtskarte von Mitteleuropa / Europa / Osteuropa) dated 1943. The maps form a set with a compact name of “Mil-Geo Angaben über das Stromgebiet der Memel und der benachbarten Küstenflüss: Gewässerbeschreibung, Übergänge, Einwirkung auf die Wasserführung” (Mil-Geo information on the river basin of the Memel and the neighboring coastal rivers: description of the water bodies, crossings, and factors influencing water flow). Each sheet, with exception of Blatt 8 (Minsk) also holds additional information on the reverse, and these have been added as attachements by each 'front-sheet'. Additionally, Blatt 1 (Sheet No 1) comes with a pdf attachement, which shows the folder covers and a mini-index sheet of this 'series'. It is likely there was also a text part, as with other Mi-Geo Angaben, but there's no trace of it in the Library of Congress  (post-WW2 captured German materials and amps were used by US army and intelligence services and, after the library of the Army Map Service was disbanded in 1960s, the huge collection was dispersed.

59 sheets of the AMS photostat copy of a German 1:25 000 ‘Bildplan’ photo-maps, probably dated around 1950s, and they cover some parts of Ostrpreussen (East Prussia, currently Kaliningrad Oblast). Unfortunately, the copies were slightly reduced and generally, despite 600 dpi resolution, not much detail can be seen. That said, the sheets might be interesting, some appear to be working / proof copies produced in 2nd half of 1944, and based on the latest Luftwaffe air photography.

... and a small 'post scriptum': last year we added a German town plan of Memel (Klaipeda, Lithuania), dated approx. 1944 roku, the plan was courtesy of the University of Berkeley library. Unfortunately, though that plan was scanned very well, it was only 300 dpi resolution. Given that the details are quite fine, it was simply hard to read. Therefore, as we were scanning  other maps at the Library of Congress, we re-scanned another copy of this plan, this time in regular 600 dpi resolution.