Certainly

Not only is Ms. Harrison hot, you wanted to see if she could keep as quiet as she thought Alice should. Ms. Harrison is still playing with her tits when you walk up to the counter where she's sitting.

You whisper, "Ms. Harrison, if you are up for an inspection, please strip naked, come around the counter and bend over. I think we should be able to get through this without disturbing any of the other library patrons."

She silently nods and starts to unbutton her shirt. She slowly drops her bra, trying not make too much sound fiddling with the straps and clips. You reach out and grope her tits, then nod your head approvingly. Though her skirt hid it well, you now realize Ms. Harrison has quite the bubble butt, which is barely hidden by her thong. Her pussy is a perfect peach, and her asshole just begs to be fucked. She walks around, and when she bends over, you've made up your mind. You're going to rail her in the ass as hard as you can to make this bitch scream.

You press the head of your cock right against her little asshole. Given her reaction to just this touch, you guess she's never done anything with her ass, much less get fucked in it. That makes it all the better when you slam your full length right in her tight ass. She bites her lip hard to keep from yelping, but nonetheless makes an audible squeal. You start pounding in and out, making a loud slap whenever your hips connect with her ass. She holds it together for a few seconds before she somewhere between moaning and screaming. Her asshole tense up around your dick as she shouts "CUMIIIIIINNGG!"

Your not done yet. Her legs give out after her orgasm, so you grab her and put her into a full nelson. You start bouncing her ass on your cock, taking full advantage of the mirrors behind the counter to watch her tits bounce around wildly. She starts to play with her pussy, and within seconds cums again. This time, your cock pistoning in her asshole leaves her moan incoherent (but certainly sexy). The students visiting the library have started to watch, and some are trying to discretely touch themselves. You call out to an attractive girl who thought she was being subtle rubbing against her chair and tell her that if she wants to, she can grope Ms. Henderson's tits, since you need to see how Ms. Henderson reacts for the inspection, but your hands are full. The cute coed comes up and starts pulling on Ms. Henderson nipples. Ms. Henderson starts begging for more. As her asshole tightens up yet again, you feel yourself about to cum. You quickly pull your dick out of the librarians asshole and drop her to her hands and knees. The coed figures you want her to join as well, and after a few strokes of jerking yourself off, you slather both of their faces in cum.

You stand back and admire your work. You decide that for "official records" you need a picture of this moment, so you whip your phone out of your pocket and take a few pictures. You decide to take two more, one with your cock in Ms. Henderson's mouth and one with your cock in coed's.