The needles you need are needle system 135X17, which are available in many places on the internet, including E-Bay. Some brand names are Schmetz, Groz-Beckert, and Organ. They come in sizes from 16 to 25, with the higher the number the heavier the needle. Use at least a size 18 needle for size 69 and size 92 thread which are the ones you'll be using the most often. The first picture shows needles in three different sizes, which are 130/21, 140/22 and 200/25. The first number is the NM number, or "number metric" expressed as thousandths of a millimeter. This is the diameter of the shank of the needle. The second number is the Singer number, which is used most often when talking about needle sizes.
Here is a link to a thread supplier: The Thread Exchange, Inc.
If I were you, I'd throw away any old thread, including the bobbin thread, except to practice with.