As part of the seemingly never-ending struggle to better organize my commentaries, I have been trying to track down dates for when the individual volumes of Lange's Commentary were published. More specifically, I have been trying to track down the publication dates for the German commentaries that stand behind the English translations available in Logos (so I have a more precise idea how old the scholarship is). I am relatively satisfied with the progress I have made, but I am stumped when it comes to the volume on the Apocrypha. I know that Schaff's translation of Lange's original work was published in 1880, but I cannot find a date anywhere for Lange's original work. Are there any super-sleuths or Apocrypha enthusiasts out there who can help me?