My memories come from more of a recent timeline, and in terms of attendance less impressive. Whilst vague and patchy, I remember my first game being vs. Colywn Bay at home in the Dr. Martens league winning season - a 2-2 draw I think, with Chris Cook getting a yellow card... Other memories include seeing Gazza come on during the 2-2 Boxing Day draw vs. Lincoln and pull us back into the game and get the point, and watching us host Fulham in the League Cup with one of the bigger crowds I remember seeing there - especially on a Tuesday night. Also, holding celebrations one week night after winning the Conference title, and seeing all the players walk around and mingle with the fans (Unless this was Dr. Martens title win, but I'm sure it was the former)
Random memories also spring to mind - Bazza almost scoring from his own goal if not for the ball getting stuck in the mud on the opposing line. Daryl Clare dropping his shorts as a goal celebration. Plus in very recent memory, losing the play-off semi final on penalties following THAT overhead kick from Chorley to level the game on 90+ mins, and also Zak Mills scoring a ridiculous angled volley.
But all in all, the stadium has been a staple of my 20ish years supporting Boston. Walking up every weekend with my brother, dad and uncle, same seats each week, same half-time drink and food, the little things that give you great memories when looking back through the years. Having lost my dad some years ago, York Street also has an added value to me in that it is a prominent fixture in many memories that I have of good times with him.
Whilst kits, players, staff, attendances and atmospheres have changed over time, that special feeling of watching a game at York Street has never changed. (even if at times it hasn't been as prominent or felt as special)