Stock Ownership US-- historical

  Household Ownership of Equities, 1953-1998.  http://www.ici.org/pdf/rpt_equity_owners.pdf
an ICI/SIA chart -- Equity Ownership in America.  Figure 3  -

   

NYSE Fact book.
NYSE Share ownership series started in 1959.  Includes  "Highlights of NYSE share owner census reports (1952-1990)"

 http://www.nyxdata.com/nysedata/asp/factbook/viewer_interactive.asp?hidCategory=11

     
  Stock Ownership Characteristics & Trends.  Working Paper 12-74.   Compares 1960 to 1971.  http://finance.wharton.upenn.edu/~rlwctr/papers/7412.PDF
References in the footnotes have many good leads to further data.