Search phone numbers and email addresses for appr. 1,000 contacts

We'd like support in finding the phone numbers and email addresses of 1,100 marketing executives in the US. We have a list with their names, company names, and titles. We'd like your help to find their direct phone number (NOT the number to the main switchboard), email address and Linked In filepath (Linked In ID) to as many of these as possible. We will provide you with a sample of 5 names so that you can test the list and also show us the quality of your work. The list will be provided to you after you bid on the project. Also, we will ask you to briefly describe how are intending to do this, so that we can check the quality of your method. We are NOT in any way interested in duplicating your method as this exercise is too time consuming for us, but we have access to a few sources that may help you find some of these contacts.