Walternate states that the first time the amber quarantine had to be used was on October 17th, 1989 and 63 civilians were trapped inside. October 17th, 1989 is the date of the famous San Francisco earthquake which resulted in 63 fatalities.
The glyphs for this episode spell out: EVENT
The Observer is in the background when Charlie points to where Olivia's car is parked.
Lincoln attributes the quote "the stuff that dreams are made of" to Cary Grant. That line is from the classic 1941 film noir The Maltese Falcon, which really starred Humphrey Bogart, not Cary Grant (one of many references to the ways in which the alternative universe is a little different from ours). The line as used in the original Maltese Falcon is itself a paraphrase from Shakespeare's play "The Tempest": "We are such stuff as dreams are made on, and our little life is rounded with a sleep."