Most of the stories were a decade old. Moreover, "Poison" was so old that Russo had had to change the dollar value of a house on Martha's Vineyard before publication. The change? "A decimal point."
[Following the publication of Mohawk (Russo's first book, which was rejected some 20 times before finding a publisher), Russo 'lived for a long time in a waking dream,' thrilled by the notion that he could walk into a bookstore in another town and find a copy of his book -- until he tried to do so...]