I found a ton of 70's "bubble gum/ disco" rock memorabilia at an estate sale. Most of the things were Bee Gees, Andy Gibb and Donny and Marie. Also included were John Denver, Neil Diamond and some George Michael. The collection consisted mostly of concert t-shirts and posters. I went once and spent $100 on a pile, I then called the owner of the house and she had me back out where I bought almost everyhing else she had left for another $100. Sold it in pieces over the next month for a total of $2,500.