Hello Edward!
The LDS catalogue has some records under:
"Poland, Bialystok, Augusto~w (Augusto~w) - Church records\
Kirchenbuch, 1796-1803 Preußen. Armee. Husaren Regiment 09 (Bosniaken
Towarczys Ulanen)
Kopie ksieg metrykalnych, 1848-1866 Kosciól ewangelicki. Parafja
Augustów (Augustów)
Ksiegi metrykalne, 1732-1866 Kosciól rzymsko-katolicki. Parafja
Augustów (Augustów)
Metrical books, 1914 Orthodox Church of Avgustov (Avgustov district"
Which can be accessed via:
http://www.familysearch.org/Eng/Library/fhlcatalog/supermainframeset.asp?display=localitysearch&columns=*,180,0
by typing Augustow into the search window.
These aren't the specific dates you are seeking, however.
The Church records for Suwalki:
"Poland, Bialystok, Suwalki (Suwalki) - Church records
Titles Kopie ksieg metrykalnych, 1808-1884 Kosciól
rzymsko-katolicki. Parafja Suwalki (Suwalki)
Kopie ksieg metrykalnych, 1843-1884 Kosciól prawoslawny. Parafja
Suwalki (Suwalki)
Kopie ksieg metrykalnych, 1849-1873 Gmina wyznania filipponska,
Suwalki (Suwalki)
Kopie ksieg metrykalnych, 1827-1884 Kosciól ewangelicki. Parafja
Suwalki (Suwalki)
Ksiegi metrykalne, 1793-1940 Kosciól ewangelicki. Parafja Suwalki
(Suwalki)
Ksiegi metrykalne, 1715-1826 Kosciól rzymsko-katolicki. Parafja
Suwalki (Suwalki)"
Can be brought up by typing Suwalki into the search slot.
These films can be ordered from and viewed at your local Family
History Centre ("Center", in your language ;-)) which can be found via
the LDS at www.familysearch.org
From 1870 the RC records were kept in Russian, it seems.
I hope that this helps.
Good to hear from you again, dear, noble comrade!
John (Rohde).