Post by email@example.com
To the OP: the 35s does not have I/O, so if you were to purchase such
a book of programs, you would have to enter each program in by hand.
Then, since the 35s cannot save programs to nonvolatile memory,
you would have to carefully change the two batteries one at a time
to retain user memory, lest you re-enter all of the equations/formulae
into the calculator.
The original HP35 was not even programmable,
but IIRC a book of "keystroke programs" for it,
the "HP35 Math Pac," to handle many problems,
was produced anyway by HP (and bought by me).
Who was the "prolific HP35 user" who originally wrote them?
[answered below, if you look through everything]
lists the following under "Calculator Manuals"
HP-35 Math Pac
HP-35 Surveying Pac
http://www.finseth.com/hpdata/hp35a.php says, near end of page:
"Quoted from HP-35 Math Pac manual, page 168..
How would you display all 1's, 2's, ... 9's?"
Wow, here is quite a find (courtesy of Nelson & Horn)
"HP made it very easy for you to buy a machine.
You contacted the HP sales force and a salesman would take your order.
HP also started an order-by-mail campaign that gave you a true 15 day free trial.
They would not cash your check until after the 15 day trial"