“The Friedrich gallery is probably the most striking one at the [German Centenary] exhibition, and our group [of loans from the Hamburger Kunsthalle] will have, as far as I can see at this point, the most powerful resonance.” – Alfred Lichtwark, in Leppien, Wege, 138, letter dated January 1, 1906.

The Hamburger Kunsthalle sent The Sea of Ice, Mountain Landscape in Bohemia, and Ploughed Field to Berlin as loans for the exhibition.