Could you elaborate? The 16th Amendment was ratified in 1913 and from what I can tell the top marginal rate was in the 90s until 1964...
http://www.taxpolicycenter.org/taxfacts/displayafact.cfm?Doc...
http://www.taxpolicycenter.org/taxfacts/displayafact.cfm?Doc...
The 90% tax rate was indeed in effect but very few people fell victim to it: http://almostclassical.blogspot.com/2011/03/90-tax-rate-myth...