Well, I can answer one of your questions. If you look towards the very end of Appendix B you'll find.
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Originally Posted by Return of the King: Appendix B
1482 Death of Mistress Rose, wife of Master Samwise, on Mid-year's Day. On Sptemeber 22 Master Samwise rides out from Bag End. He comes to the Tower Hills, and is last seen by Elanor, to whom he gives the Red Book afterwards kept by the Fairbairns. Among them the tradition is handed down from Elanor that Samwise passed the Towers, and went to the Grey Havens, and passed over the Sea, last of the Ring-bearers.
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Shortly after that is where it says that Legolas took Gimli with him to Valinor. I'd guess that there were no other dwarves there, but I don't have any text that could back that up.