More Rick & Morty and Gravity Falls crossover shit.

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I haven't noticed this mentioned here yet, but in the last episode of Rick & Morty, Rick had removed Morty's memories of Bill Cipher and Standford Pines. What specific memories of Bill and Ford did Rick need to take out of Morty's head?

Does anyone know all the crossovers between Rick & Morty and Gravity Falls that they've had in all the materials now? I know the Ford wanted poster in one of the Gravity Falls Journals has graffiti on it that says "Rick Was Here." What else?