Lookup Email Address, Phone Number and Facebook for lead list

As a business owner, I have a list of potential leads with minimal data, and am looking for help in expanding the information. The list consists primarily of contacts from the United States, and I need to find emails, phone numbers, and Facebook accounts for them. I plan on having the data collected manually, as opposed to using an external source or agency. Currently, I do not need to gather any additional information beyond the email address, phone number, and Facebook account. Therefore, I am looking for help from an experienced freelancer to look up the email address, phone number, and Facebook account for my lead list.