Bob, you probably confirmed John S's suspicion when you wrote, "I believe they are the examples of each log that a seller has used to show his client."
Here's some important information about veneer. Most veneer buyers want material that is in the sequence that it was sliced from the log. That's what allows us to create components with consistent grain structure and color, sometimes over very long runs. These sequences can be up to hundreds of individual leaves that are in order, and sometimes up to several thousand leaves from the same flitch or log.
When a flitch is sampled to a potential customer, there is an accepted method for doing so. A leaf is taken from one-third of the way through the flitch, one-half of the way through the flitch, and two-thirds of the way through the flitch. If the material you have is all sample sets of this type, what you have is sets of three non-sequential leaves, each set being from a different flitch.
Sadly, such material is of value to almost no one. The only user I can imagine who can make use of it is someone who does very small projects using veneer, projects that do not require sequential leaves. Practically by definition, that person is not going to need a lot of veneer, and there aren't very many of those people to begin with.
Sorry to burst your bubble, but it sounds like you've got a barn full of nothing. If I were you I'd doublecheck the pallets to make sure there aren't any whole flitches in there -- they might be worth something, subject to the observations of the posters above. If not, you might try offering it for free to schools.
Sorry to rain on your parade, but it's probably better to know before you invest a lot of time and energy.
John Costin
Veneer Services Unlimited
vsu@gwi.net
207-985-7221
Custom Veneered Products for the Woodworking Industry