References when my manager was laid off too after 9 years as an electrician's helper

My manager was laid off too and I am unsure who to use as a reference. I am in Jacksonville, in case local advice matters. I have one former client who liked my work. Is a client acceptable?

Use a professional network to find a former manager. Many will still write a note.

Keep everything in writing and save the confirmation numbers. It made the follow-up calls so much easier.