Seeking Kipling Expert to Answer Questions Regarding Rudyard’s Correspondence with Vaughn Bateson.

The title really says it all, but it feels wrong to leave this blank, so I’ll elaborate. I recently came into possession of Vaughn Bateson’s biography and learnt online that there are a handful of letters between him and Kipling, but I haven’t been able to find any posted online. If you’re an expert on Kipling, or you can access to the volumes of his letters that include Bateson, I’m dying to know more about their correspondence. Thank you in advance for any answers or assistance you may be able to provide.