TurboTax will not allow me to fill out form 8949, claiming it will be done for me. However, I had to abandon a worthless security and Vanguard does not issue tax forms.

Vanguard will not report this to the IRS, nor provide any data on abandoned shares. I saved all the documentation, assuming that TurboTax will allow me to fill out form 8949 to declare the loss and get the appropriate deduction.