If no one responds, and you are pretty sure of your dates, you can research it using the archive. Click the "Archive" hotspot at the bottom of this page. If they just posted a picture, go to the picture forum. All posts are listed in descending order of when they were posted. You will have to click around a bit to hit the 4/1 date, but then you can open each post sequentially until you find the one you want. Remember that if they asked a question (what color border etc.) the post will be in the "Main" forum.