Ken Fisher discusses Green in his book "100 Minds That Made the Market" (Wiley, 2007) arguing that despite her eccentricity she was in many ways a better investor than most of her early Wall Street contemporaries. Green clearly understood the power of compound interest, and her focus on regular modest gains of 6% a year and frugal living made her fortune more durable than the likes of Jesse Livermore who repeatedly earned larger sums on more extravagant deals but also went bankrupt through excessive spending and high-risk investments.