I've lost all my tax information, including 1099's. I'm retired and I have pension from the city and a county as well as Social Security but now I have no documents 2C?

You will need to obtain copies of your documents from Social Security and from the financial institutions that issue your 1099's.  

 

GET SSA1099

https://www.ssa.gov/faqs/en/questions/KA-01723.html

 

If your pension comes from the city or county, then contact them to find out how to get copies.  You can likely go to their website to get copies.    What about any other 1099's like from a 401k or IRA----did you have those?