At the optimistic moment in which their exuberant celebrations were captured, the team from the west were about to compete in their second grand final in seven years. Their captain-coach was the man many say was the greatest footballer of all time, EJ Whitten. These buoyant fans, with their sign reading 'Bulldogs for Premiers 1961', would have expected good times to keep rolling in; they would have been astonished to learn about the barren years their team was about to endure.
That there would be no more flags, in 1961 or thereafter.
Not even one grand final appearance.
In stark contrast, during that same period, the Hawthorn team who were about to defeat us for their first ever flag, would go on to win 12 more.
The festive group, hunkered down in their sleeping bags - though it appears very little sleeping would be done - would have been dismayed to learn it would be 24 long years before the Dogs even returned to the MCG to feature in a final. (We lost two in the '70s in the miserable grey concrete surrounds of Arctic Park).
The Hawks - by then with five premiership cups glittering in their trophy cabinet - awaited us once again.
The year was 1985. It was the first time, since I started going to matches as a four-year-old, that I'd seen our team in a final. When the Footscray boys ran out onto the famous ground to a tremendous roar, I saw people weeping. Whether with joy that this day had finally come, or sadness that it had taken so long, it was impossible to say.
There were tears of a different kind when the Hawks demolished us by a humiliating 93 points.
Now here in the 2016 semi-final, the formidable might and power of the Hawks, who've won the last three flags and dominated the competition since the '70s, is on display. There's no pretence this is a neutral venue. Brown and gold flags circle the arena; footage on the big screen shows their many recent triumphs, on a loop.
Together the Dogs' fans have marched from Federation Square to the 'G, a place for us of great pain and few triumphs. The mood as thousands of us walk along is both joyful and tense. We've floated on air since last week's magnificent win. But we worry - we're extremely good at worrying - if that victory was our grand final, a match our battered team psyched ourselves up for. We fear - because we're also very used to being afraid - that we may not find that same determination and belief yet again, taking on this powerhouse opponent.