This website will help you request a "Proof of Income" letter that can be used to prove that you are eligible for benefits.
Can People with Bipolar Disorder Get Social Security Disability?
"Those suffering from either form of bipolar disorder may consider applying for Social Security Disability (SSD) benefits."
Disability Programs (Social Security Online)
These web pages describe the different disability programs administered by the social security program including information about how to apply for benefits, how to manage the benefits you are receiving now, the different forms of health insurance that are available and other information.
Consumer handouts explaining the Social Security Administration's plan to repay more than $500 million in benefits that were unlawfully withheld.
What You Need To Know When You Get Disability Benefits
You should, now that you’re receiving Social Security disability benefits. You might think that, because the disability application process is over and your benefits are about to start, you no longer have to worry about Social Security. But what should you do if your condition improves? Or what if you want to go back to work but are afraid of losing your benefits? Knowing the answers to these and other questions now will save you a great deal of time, inconvenience and maybe some money later.