Yes. There are wikipedia articles about historical territorial units. THE HISTORICAL TERRITORIAL UNITS WHICH ACTUALLY EXISTED, not some propaganda inventions, which - worse - were described here as if they existed. If I remember correctly, Lithuanian units NEVER reached Augustow, so "Augustavo Apskritis" was pure fantasy. No offence intended, but in the same manner we could write article on Kowno voivodship - some political forces in inter-war Poland advocated finishing "Lithuanian problem" by annexation of the whole republic and creating such a unit. 

 Numbers and distribution of Lithuanian population in the area in the interwar period were roughly similar to what is now - there is quite a lot of things on the subject written by actual members of the minority, most notably a historian Bronisław Makowski/Bronius Makauskas. I think some of his work could be available in Lithuania. 

 If you kindly look at some map, you'll see that the Punsk nad Sejny region - the area in which the Lithuanian villages can be found - is itself a very small, northernmost part of the whole territory discussed here. 

 I still believe, that Lithuanian-Polish conflict in Suwalki land should be described in wider context of the area's history and not in small and one sided articles like this one. 

 Anyway - made some changes to the article and removed disputed territories cat. - as you mention yourself "it is no longer claimed". I suppose it would be generally advisable for you to show more caution when using terms like 'occupied' or 'disputed' when describing current European affaires.