Which episode, the Bob Newhart Show (Solved, S05E03)

In one episode, Emily (Suzanne Pleshette) finds Bob's old address book.  The dialog goes something like this:

Emily  (reading Bob's address book:  Betty Johnson, with four stars next to her name?

Bob: Her father was a general in the Army.

Emily:  What about Mary Simpson, with "vroom, vroom" next to her name?

Bob:  Her father was a race car driver.

Emlly: Why does Alice Becker have "Hot to trot" next to her name.  (sarcastically) I suppose her father was a jockey?

Bob:  No, nympho.