New sewing threads are now coming on the market: they're intended to overcome some of the problems encountered with some older threads. Here are what the new threads are and some tips on how to use them.
Hollen, Norma and Roberson, Opal
"New Threads for Sewing,"
Iowa Farm Science: Vol. 9
, Article 3.
Available at: https://lib.dr.iastate.edu/farmscience/vol9/iss6/3