The company which i was working has been taken over by another company of which i am an employee. I do have pay stubs of my salary of the old company. How to I substantiate my claim that I worked for this company for PR work experince. Do I need to notarize the employment letter? I do have a letter by an ex-employee from management mentioning that I work of the company which now taken over, but it's without its letter head. All the mamangment personnel of the old company left. What are other documents I can substantiate to prove that the old company is taken over by new one? Can I source something from my new company?