Yes! There are several ways for us to receive POs. You can add your organization’s tax ID directly to your account before your purchase (See: “Where can I add my tax exempt ID?”). Alternatively, if you would like to receive an invoice you can email a copy of your PO to [email protected] with our mailing address: F-flat Books, PO Box 3672 Philadelphia, PA 19125. Invoices will be generated using QuickBooks and you will receive instructions on how to download your materials.