William Neil Roberts (harpsichord) Antonio Soler 5 sonatas & Carlos Seixas 4 sonatas, 2 toccatas

Type of harpsichord or builder not mentioned in the documentation.
@takemyjobpleeez suggested: "Sounds like his Neupert Bach model he used to record 'The Nine Muses"'.
Released 1971 by Genesis Records Inc. GS 1007, Santa Monica, California
Cover and production by Robert Commagere
Liner notes by Sister Teresita CSJ, Ph.D. Assistant Professor of Music, Mount Saint Mary's College
Library of Congress Card Numbers 71-752331 and 75-752332 apply to this recording

Thanks to Robert Tifft the webmaster of the European Revival Harpsichordists ( https://jsebestyen.org/harpsichord/ ) for the LP-documentation and the acoustic material to make this publication possible.
Thanks to lulukitty7827 for the track listing with Rubio numbers Padre Antonio Soler

Side One
Padre Antonio Soler (1729 -1783)
00:00 Sonata in A Minor R118 (2'22)
02:23 Sonata in C Minor R18 (5'05)
07:27 Sonata in D Flat Major R22 (5'50)
13:16 Sonata in B Flat Major R3 (4'34)
17:51 Sonata in C Major R7 (2'42)
(Total time, side one 20'33)

Side Two
Carlos Seixas (1704-1742)
20:31 Sonata in F Minor (3'44)
24:16 Sonata in A Minor (4'56)
29:11 Sonata in B Flat Major (4'50)
34:01 Sonata in D Minor (4'30)
38:29 Toccata in G Minor (1'40)
40:10 Toccata in D Major (1'51)
(Total time, side two 21'31)

WM. NEIL ROBERTS began his musical training at the age of seven. He
studied piano at Pease Conservatory of Music in Sacramento, De Paul
University in Chicago with Sergei Tarnowsky and at Cornish School in
Seattle with Stephen Balogh. He holds degrees in Musicology from the
University of Washington. His interest in the harpsichord began with a
detailed study of the 17th and 18th century treatises on harpsichord
playing and baroque musical studies under the guidance of Dr. Otto
Kinkeldey and Robert Donington. He moved to Los Angeles in 1964 to
study harpsichord with Alice Ehlers. Mr. Roberts has been a member of
the faculty of the University of Southern California School of Performing
Arts, Preparatory Division since 1964. He has recorded works by
Louis- Armand Couperin, Handel and Corelli with violinist Marshall Moss.