How To Clean Years of Smoke from Crewel Embroidery?

Good Questions

Q: My mother crewelled an 18" x 24" picture to commemorate my Leo birth in 1974. The linen background is now as yellow as the sunflowers thanks to decades of smokers. Thankfully, we've all kicked the habit, and I was wondering if anyone had tips on how to clean this item. The linen is mounted on a wooden stretcher. I believe the floss is cotton and/or wool. The piece is framed poorly, and is not backed or glazed. I want to clean it up prior to framing it properly. How do I clean 38 years' worth of smoke out of heirloom crewel embroidery?

Sent by Sharon

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