I realized that the seed Nancy sent me was not genetically pure. I had an anomalous plant that was developing some kind of cross between what it was supposed to be (an Acorn squash) and what I am pretty sure was Zucchini. I kept the first squash that matured from this plant in case I have time to "play" with it in the future. I then removed the plant so I could attempt to get some more-pure squash developing (squash cross-pollinates badly with others within its family!) I removed all the developing squash and the blooms that may have been pollinated at the same time, leaving only the new buds. I will harvest the seed from the most mature squash that has the characteristics of Acorn and attempt to grow out some pure seed next year.
Roger