FYI: As noted in our previous post, thirty years has marked the outer boundary of Treasury bond maturities since “regular and predictable” issuance of coupon-bearing Treasury debt became the norm in the 1970s. However, the Treasury issued bonds with maturities of greater than thirty years on seven occasions in the 1950s and 1960s, in an effort to lengthen the maturity structure of the debt. While our earlier post described the efforts of Treasury debt managers to lengthen debt maturities between 1953 and 1957, this post examines the period from 1957 to 1965
Regards,
Ted
http://ritholtz.com/2017/02/beyond-30-long-term-treasury-bond-issuance-1957-1965/