This is the first of the travelogues, at least when the books are read in numerical order. Other travelogues, such as #36, were published many years before this revised text was published. The reader learns a lot about the Space Center.
Many collectors criticize this book for the absurdity of the explosive oranges. That part of the plot does not bother me at all. I do find it a little hard to believe that all of the government officials so readily share information with Nancy. They share information because of Mr. Drew, but that does not make it logical that they would give Mr. Drew's daughter the information.
While the young people are at the Space Center, Hannah chances to meet Herb Baylor, who is an acquaintance and just happens to have seen the truck with the explosive oranges. He also saw a newspaper that came from the truck. He remembers the ad from the newspaper and recites it for Nancy. I find it strange that Herb would just happen to remember the exact wording of the ad.
The codes in the newspaper ads strike me as a bit stupid. It seems to me that since all of the villains know about the hideout at the moss-covered mansion that they could have met there every few days to keep updated on developments. For that matter, couldn't they just talk on the phone?
On the subject of phones, Nancy is fully aware that Mr. Billingsley's house has multiple phone extensions in different rooms and in the orange packing house. At one point, Nancy hears part of a call and tries to figure out who was on the phone. In spite of her awareness of the extensions, Nancy calls Mr. Drew on the house phone and tells him everything. This is foolhardy.
Nancy and her friends suspect that the people who live in the moss-covered mansion might be involved with the explosive oranges case. Oddly, they decline to tell the authorities about their suspicions. Days later, Nancy and Ned sneak into the mansion. When Nancy and Ned fail to return quickly, their friends call NASA and report their suspicions. At this point, the reader knows what is happening inside the mansion, but Nancy's friends do not. Based on what little Nancy's friends know and had known for many days, the authorities arrive and enter the mansion. Why did Nancy not call the authorities days before?
This quote in the original text, page 10, is priceless. "'We must run while there's time,' Bess pleaded nervously. 'Nancy, you know it would never do for us to become involved in some tragic affair. It might ruin our vacation.'" Indeed, that would never do.
Ramo learns about June Campbell's fortune by eavesdropping. The reader knows what is going to happen, and this type of plot exasperates me. I hate reading about a villain getting the upper hand, knowing about every step in the process. I would actually have preferred not to have known about Ramo's success at eavesdropping. I would like to have figured out on my own that the heiress that suddenly appears is an imposter. Of course, I would have already realized it immediately, but at least I would have been left to wonder about the circumstances a tiny bit.
Nancy and her friends have close encounters with wild animals in both the original text and the revised text. The encounters in the original text are a bit more unbelievable to me, since it has a lion loose in the woods. Nancy also encounters a tiger inside the mansion and keeps it back with a chair. Nancy missed her true calling; she should have joined the circus.
I enjoyed reading both texts. Since both texts are completely different, I lean towards the revised text as a more favorite story. This does not mean that the revised text is better, just that I like it a little bit more.