I found the Buster Keaton Museum on Rural Kansas website – http://www.getruralkansas.org/Piqua/157Explore/557.shtml (ignore the Official Website link on Rural Kansas as it no longer works; see old website below)
Official Website: http://www.kansastravel.org/busterkeatonmuseum.htm (per Wikipedia) – old website (Wayback Machine): https://web.archive.org/web/20060803103041/http://busterkeatonmuseum.happywebsite.biz/
Location
Rural Water District 1
302 South Hill Street
Piqua, Kansas 66761
(620) 468-2385Open 8 AM – 2 PM Monday – Friday
other hours by appointment free
Atlas Obscura: No listing located, but here’s a listing for Buster Keaton Studio plaques in California – https://www.atlasobscura.com/places/buster-keaton-studios-plaques.
BillionGraves: https://billiongraves.com/grave/Buster-Keaton/18911241
Facebook (website, search, or blog page): https://www.facebook.com/search/top/?q=Buster%20Keaton%20Museum&epa=SEARCH_BOX (search)
Find-A-Grave: https://www.findagrave.com/memorial/565/buster-keaton
Flickr: https://www.flickr.com/photos/kansasexplorer3128/3080507502/in/photolist-5Gdpyj
Four States Homepage: https://www.fourstateshomepage.com/news/buster-keaton-museum/1992874836
Get Rural Kansas: http://www.getruralkansas.org/Piqua/157Explore/557.shtml (same as link at top of post)
Google Maps: Google Maps Piqua, Kansas (think it’s off as it’s supposed to be in the Rural Water District Office, bit north and west of where it’s showing)
Instagram: https://www.instagram.com/explore/locations/1244346035603891/buster-keaton-museum-piqua-kansas/
Kansas Living Magazine: https://kansaslivingmagazine.com/ – no listing located
KansasSampler.org: https://www.kansassampler.org/8wonders/peopleresults.php?id=328
KansasTravel.org: http://kansastravel.org/busterkeatonmuseum.htm
Only In Your State: https://www.onlyinyourstate.com/kansas/peaceful-kansas-small-towns/ (#7)
https://www.onlyinyourstate.com/kansas/famous-kansas/ (#10)
Pinterest: https://www.pinterest.com/search/pins/?q=Buster%20Keaton%20Museum&rs=typed (some may be scattered in the images)
Roadside America: https://www.roadsideamerica.com/tip/3281
Road Trippers: https://maps.roadtrippers.com/us/piqua-ks/points-of-interest/buster-keaton-museum
Travel Kansas: https://www.travelks.com/listing/buster-keaton-memorial-museum/2621/
Trip Advisor: https://www.tripadvisor.com/Attraction_Review-g38992-d4884503-Reviews-Buster_Keaton_Museum-Piqua_Kansas.html
Tumblr: https://www.tumblr.com/search/Buster+Keaton+Museum
Twitch channel or search: No listing located
Twitter: https://twitter.com/search?q=Buster%20Keaton%20Museum%20Piqua&src=typd
Vimeo channel or search: No listing located
Wikipedia: https://en.wikipedia.org/wiki/List_of_museums_in_Kansas (brief mention with link to official website)
Buster Keaton: https://en.wikipedia.org/wiki/Buster_Keaton
Yelp: https://www.yelp.com No listing located
YouTube channel or search: https://www.youtube.com/watch?v=Qcx9U0efDik
https://www.youtube.com/watch?v=vjdHv5I6nIk
Other Kansas Tuesdays posts: https://upsdownsfamilyhistory.wordpress.com/tag/kansas-tuesdays/
Ups Downs Family History 