The McGuffey Eclectic Primer wasn’t published until 1881, two years after most of the others were updated and published. Again, it’s likely Farny designed the cover, but I can’t locate a good enough quality book cover to spot his signature. The book includes at least eleven pictures from Farny in this edition.
1881 McGuffey’s Eclectic Primer (cover is from 1881, but book is 1890s version)
https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=7
Cover: 1881-McGuffeys-Eclectic-Primer-Cover.jpg
Title Page: 1881-McGuffeys-Eclectic-Primer-Title-Page.jpg, https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=7
Page 9, Lesson III: 1881-McGuffeys-Eclectic-Primer-Lesson-III-pg9.jpg,
https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=15
Page 12, Lesson VI: 1881-McGuffeys-Eclectic-Primer-Lesson-VI-pg12.jpg, https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=18
Page 13, Lesson VII: 1881-McGuffeys-Eclectic-Primer-Lesson-VII-pg13.jpg, https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=19
Page 19, Lesson XIII: 1881-McGuffeys-Eclectic-Primer-Lesson-XIII-pg19.jpg, https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=25
Page 20, Lesson XIV: 1881-McGuffeys-Eclectic-Primer-Lesson-XIV-pg20.jpg, https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=26
Page 24, Lesson XIX: 1881-McGuffeys-Eclectic-Primer-Lesson-XIX-pg24.jpg, https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=30
Page 35, Lesson XXIX: 1881-McGuffeys-Eclectic-Primer-Lesson-XXIX-pg35.jpg, https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=41
Page 37, Lesson XXXI: 1881-McGuffeys-Eclectic-Primer-Lesson-XXXI-pg37.jpg, https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=43
Page 50, Lesson XLIII: 1881-McGuffeys-Eclectic-Primer-Lesson-XLIII-pg50.jpg, https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=56
Page 54, Lesson XLVII: 1881-McGuffeys-Eclectic-Primer-Lesson-XLVII-pg54.jpg, https://babel.hathitrust.org/cgi/pt?id=osu.32435015466295&seq=60
