Can I get a summary of each year, total earned/company? I used TurboTax every year, all W2. Can I print proof of income by year, condensed into one file?

No.   TurboTax cannot prepare a summary of your W-2's by year and employer for you.   You are supposed to save your own W-2's -- if you did that, as instructed on the back of your W-2's, you would have exactly what you are now looking for.   

TurboTax does not have copies of your W-2's.   The worksheets that are part of the pdf's of your tax returns show the amounts you entered from the W-2's, so you can look for those worksheets and the employer information that is on them.

You could also seek a work history from Social Security.

WORK HISTORY  https://www.ssa.gov/forms/ssa-7050.pdf

Or

Pay Social Security $62 per tax year for your W-2’s.:

https://faq.ssa.gov/en-US/Topic/article/KA-02501

https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-forms/get-copy-w-2/L8FTim9MO_US_en_US?uid=m68ee4os