True discount tables showing the present value of $1 due in 1 day to 6 months on 2% to 6% per annum basis progressing by 1/8% also variations of 1/16% and 1/20% between 3 1/2% & 4 1/2%, 360 days per annum ... /
Reussner, Robert.
New York & London, 
[1904]