A small update from the collections of the Library of Congress:

• approx. 20 sheets of the German 1:300,000 map (Übersichtskarte von Mitteleuropa), in the Mil-Geo Karpaten (Carpathia) version. However, these sheets are NOT German originals, but copies made, probably in the 1950s, by the US Army Map Service.

• approx. 20 sheets (far from complete out of about 60, according to the index) of Polish-Czechoslovak border maps, 1:25,000 scale, probably a WIG copy from around 1920, possibly based on maps made during the process of border delimitation. No index in mapster, maps are presented only as a list, with a hand-drawn index (possibly made in the Library of Congress) shown below the list. We know nothing else.
  

• 23 sheets of the Umgebungskarte Sudsha (Bildplankarte) 1:25 000 (Map of the Sudzha area). Indeed, yes, it is *that* Sudzha (one sheet may have been lost, hopefully we will be able to scan it in the future). These are photomaps, one of German cartographic, WW2 experiments around 1942/43 (a dozen or so larger sheets of this map type, e.g. from areas north of Kyiv in Ukraine, Voronezh in Russia, and a few others such as Staraya Russa, can be found on the list of German maps 1:25 000 Russland. To search use keyword 'Bildplankarte'.

• Four sheets of the German variant of the Weltkarte 1:1 million map, in the “Baustoffkarte des europäischen Russland” version — with overprints of mineral deposits, specifically building materials — both composite and single sheets are available. Unfortunately, several sheets were so large that they would not fit on the scanner.

• several sheets of the German 1:500,000 map Übersichtskarte zur Gelände­beurteilung von Nordgriechenland und Thrazien (Overview map for terrain assessment of northern Greece and Thrace)

• two German maps from the continuation series of the Austro-Hungarian Generalkarte von Mitteleuropa, 1:200 000. The sheets are quite interesting; the Mogilev-Podolsky sheet contains handwritten annotations and a rather curious 'sticker' on reverse side. The 'Katarszino' sheet belongs to the Mil-Geo Karte von Rumänien sub-series. Unfortunately, the sheets of this particular Mil-Geo Karte series are so large, including their wide margins, that they do not fit on a 36-inch scanner, so only one rather small sheet could be scanned.

• one sheet of the German Rußland 1:25 000 (N-36-13-B), only for reference, as it is no more than just an enlarged fragment of a 1:50,000 map.

• an American index map made in 1968 for the German map series BEFESTIGUNGSKARTE RUMÄNIEN 1:100,000 (Map of the Fortifications of Romania). This series consists of a few dozens of sheets, with very interesting fortification overprints, though in rather poor condition (multiple tears and folds). They MIGHT fit on the scanner, but other maps are higher on our priority list so these ones need to wait their turn — perhaps some time in the next decade?

• a large map, or rather a sketch, at a scale of 1:100,000 titled Karte der Düna-Übergänge und ihrer Zufahrtswege im Abschnitt Druja-Jekabpils (Map of Dvina crossings and their access roads in the Druja – Jekabpils section). Although the map appears under its own call number, it may be part of report by the Wehrgeologie unit 11 on water obstacles in this area. The report is in two parts, but unfortunately, because of its very fragile condition (stitched, glued with ‘transparent’ tape, crumbling pages, with maps, both both small and large, glue in), it cannot be scanned even with a contactless scanner. The materials were photographed, and despite the poor presentation, we will try to make them available as a PDF file.

• a Russian map 'Topograficheskaya karta okrestnosti m. Sekuriany' (a descriptive title, probably assigned in the Library of Congress). It dates from around 1840, scale approximately 1:126,000 (three-verst). The city is now called Sokiriany (Сокиряни), located roughly east/southeast of Kamianets-Podilskyi (on the southern side of the Dniester). For those interested... see Google Maps.

• a Russian map at a scale of 1:1,680,000 from 1903 with the charming title КАРТА МАЛОРОССIИ (Map of Malorossiya). The name, might be misleading, 'Malorossiya' is an outdated term peddled recently through neo-imperial ambitions of a man in Kremlin. For reference, the map covers the area of Ukraine west of Kyiv, through Kharkiv, Kupiansk, Bakhmut, and as far as Starobilsk.

• German map at a scale of 1:100,000 (Italien), sheet 69 (Asti), Stereokarte. However, it is not a ‘stereoscopic map’ i.e. based on aerial photographs, but an ‘anaglyph map’ which, when viewed through red–blue glasses, produces a stereoscopic, three-dimensional effect (other examples of 3D images can be found on one of the sheets of the above-mentioned Mil-Geo maps from northern Greece). Incidentally, I don't know how many sheets of the Italian 100K series were produced; the Library of Congress has a few (3–5) and I scanned this one for reference. There are probably at least several thousand sheets of maps of Italy from the 1930s and World War II, at scales ranging from 1:25,000 to 1:100,000, in Italian, American, British, and German editions — and some same sheets were often reissued multiple times (up to six editions of a single sheet, plus variants, combat situation reprints, fortifications sheets, etc.), so we have no plans to ‘expand’ onto this topic.