7.51896 — Rhodography Solution
The pieces assemble to form this image:
Rhodography isn't a real subject, but rhodology is the study of
roses, and the French word rhodographie means a treatise on roses.
The "rose" root of this word was meant to hint that the frame is
from the comic strip Rose is Rose, and it was from the May 18, 1996
edition of that comic strip, which the puzzle number 51896 was
meant to clue (the 7 represents MIT course 7, Biology, which of
course is where the study of roses would fall). However, it was too
difficult for solvers to find this during the Hunt, and the answer
was released, the words that were removed from the comic strip
frame: NUCLEAR REACTOR.