This ticket book is from May 1967. I love the back of the book, the dancing couple is too cute and they totally remind me of the cartoon Darrin and Samantha from the Bewitched opening title scene! Seems like a bargain at $6.50 for two admissions, but it's only 5 rides each, However, since you could not enter the park until 5pm, 5 tickets each may have been enough.
Unfortunately, this rare book only has 2 "A" tickets left in it, but you can get good idea of how the other tickets looked. It's just a regulation May 1967 "A" ticket (although it is on the unique 2 year only "Castle Paper") with the snazzy dancing couple printed in Blue in the the middle of the ticket. The serial number is unique also starting with "N"
The back of the "A" ticket does have a special message only found on these "Date Nite" tickets. "Good only after 5:00 p.m., when Disneyland is open after 10:00 p.m. And when ticket books are on sale" That is fairly unusual as most tickets I have seen have no time restrictions.
The Welcome message is the same text as the other ticket books. However, the reddish/purple ink was used from 1958 thru 1973 is Blue on this ticket book, again, fairly rare.
May 1967 ticket books include the new Tomorrowland, and this attraction list is plenty full.