The Congressional summons shows the agents' full names: Walter Sergei Skinner, Fox William Mulder, and Dana Katherine Scully.
This is the first time in the series in which both Mulder and Scully are seen in full FBI combat uniforms.
After Scully shows him the meteorite, Mulder says to Krycek, "What did you get for Halloween, Charlie Brown?" This references It's the Great Pumpkin, Charlie Brown (1966), in which Charlie Brown only gets rocks while trick-or-treating.
The gulag scenes were inspired by the Aleksandr Solzhenitsyn novel "One Day in the Life of Ivan Denisovich."
When Mulder looks at his watch, the date is shown as November 25, 1996. This was the day after this episode aired.