I need a sole source document. Where can I find it? January 24, 2023 13:10 Updated You can download a PDF of our sole source letter. Attached please find the PVB Sole Source Letter 2023. PVB Sole Source Letter 2023.pdf 200 KB Download Related articles I need a copy of your W-9. Where can I find it? What is the difference between Intervention levels and Reading Recovery levels? How do you determine shipping rates? Can I write to Bella and Rosie? What are your shipping costs?