Professional photos (portraits) of business people

We are analysts who want to make the business market more understandable. We are tending to open a blog, so people can read daily articles about how the market works. First we want to start with a survey, where we are analyzing the common characteristics of successful business people. In addition we are analyzing the view about how normal people would imagine "the business-man" (characteristics, looks and so on). In this case we need you! To finish the survey we need pictures of business people with different ethnicities. For example a person from China, India, America, then women, men, different ages, etc. About 15-25 pictures would be perfect. We are publishing this "job" to avoid manipulating of the survey. Our service is characerized by quality. Therefore we need pictures which are very hard to find or not at all. Pictures which are a little changed via Photoshop etc., which look nevertheless real, are also welcome. We would be thankful for any help!