accessories

Leica fact 15: Leica accessories in the thirties

The other day I was browsing through my Leica documentation. I have 4 issues of the Leica Zubehör catalogue (Accessories) being: November 1935, without prices, July 1937 with printed prices in Reichsmark, August 1937 with a separate insert with prices in Dutch guilders and one of April 1939 without prices. Image 1

Leitz issued separate catalogues for lenses, viewfinders, close up accessories, projection reproduction and enlargement equipment and more.

What is it that you can find in these catalogues?