"Yup, bigger than an elephant."

"Cool."

Cam's tail wags. "All right, looking up local Ben Franklin publications, just a sec..."

This universe's Ben Franklin is consistent with his universe's in predicting cryonics-or-something-like-it and being wistful about not living long enough to get there!

"Okay, anything you wanna square away before we go try this?"

"If you can re-create everything there's not much reason to bring the library but if we don't we should do something to make sure nobody stumbles across it and decides to summon something dangerous." 

"You expect trespassers? We don't have to be gone very long."

"If we're leaving anyway...I'm probably going to outgrow the house before much longer. And. The town really doesn't like us." 

"Fair enough. What do they even know about you?"

"Old John Whately had weird books and Lavinnia Whately had a child out of wedlock and there've been rumors about inbreeding for generations--it's what they chalk me up to--and all their dogs hate me." 

"Why do dogs hate you?"

"I haven't exactly asked but I think it's because of how I smell." 

"Huh. I guess. Well. I don't think you want to live on a space station forever - it'd make you permanently dependent on stuff I make, and teaching you to maintain it all would be a big project - but we don't have to come back here in particular when we're done up there."

Nod. "Somewhere else would be better." 

"Maybe Mr. Franklin will have input. We shall see. Go ahead and pack up whatever you wanna bring, here's some bins and a float pallet." Voilà.

Wilbur packs. It doesn't take long, apparently the whole house is just this one big room and a cellar. 

Cam makes a spacious spaceship and reads more of the Book of Ignorance.

Azathoth is really big and dangerous and at the center of the galaxy! He has an Other Name that can give you thus-and-such powers (the Other Name itself is not included). He may or may not actually be conscious in any real sense. 

Are the powers any good?

The description is a little flowery and roundabout but basically it gives you mastery over the kinds of beings that don't exist fully within this plane of reality. How complete the control is depends on the power of the being in question--the wielder of the name could strip all free will from some lesser beings, but only make greater ones go away and leave you alone. 

What, pray tell, are the horrible side effects of having the name handy such that it was redacted?

Not listed. The name itself is described as "unfathomably terrible" but that's not very specific. 

He supposes he will hold off until he finds himself staring down an abomination of some kind.

When the twins are ready to go he closes the ship's hatch, makes some mist to cover the ascent, and takes off.

If there are any windows Lucy will be extremely glued to them. 

There are windows! They can watch the Earth fall away.