The last major study on US inheritance that I know of was done in conjunction with the US Bureau of Labor Statistics ( http://www.bls.gov/ore/pdf/ec110030.pdf h

The last major study on US inheritance that I know of was done in conjunction with the US Bureau of Labor Statistics ( http://www.bls.gov/ore/pdf/ec110030.pdf http://www.bls.gov/ore/pdf/ec110030.pdf ). That study considers inheritance for all Americans, with some notes on the wealthy. It can be complemented by other government studies, such as the Survey of Consumer Finances, which shows wealth distribution, of what sort (stocks, bonds, home equity) etc.