Wikipedia:Articles for deletion/Mignon (Antonio de Almeida recording)
per it's inclusion in the reference work https://books.google.com/books?id=bLDaqKzJF08C&pg=PA289&lpg=PA289&dq=%22Mignon%22+%22Antonio+de+Almeida%22+%22Frederica%22&source=bl&ots=wspg0DVeuw&sig=ACfU3U0N4gRlzb2ry2r2Kz__2EaHKIuPjg&hl=en&sa=X&ved=2ahUKEwiNofzFo97kAhWHq54KHa05Btk4ChDoATAFegQICRAB#v=onepage&q=%22Mignon%22%20%22Antonio%20de%20Almeida%22%20%22Frederica%22&f=false ''The Rough Guide to Opera'' by Matthew Boyden, Nick Kimberley, Joe Staines, 2002, page 89, and https://www.americanradiohistory.com/Archive-Record-World/70s/78/RW-1978-10-28.pdf The American Radio History Archive, and it's 1978 review in ''Gramaphone''. That's enough to establish notability per criteria one of 
— User:4meter4, 01:54, 20 September 2019 (UTC)
Stance: keep
Cited policy: WP:NALBUM (Wikipedia:Notability)