From a few years ago…
A reader on our Facebook page had an excellent idea for helping to jog the memories of older family members. She made a scrapbook of old pictures with room for the person to write down what they remembered about the people in the picture, the location, etc. Generally the pictures were used as memory prompts.
The relative could then write in the book at their leisure as things came to mind.
Sometimes an interview simply isn’t long enough or memories come flooding back after it’s over.