The Mother Goose PrimerNew Beacon Reader
Wheeler's graded readers: A Primer
Primer By Maud Summers, Lucy Fitch Perkins
First Grade:
A Child's Reader In Verse by By Emma L. Eldridge
McGuffey's New First Eclectic Reader 19th century edition
Introduction to The Gradual Reader, 19th century enunciator
Jones First Reader
Stories from the Poets - First Grade Reader
First Reader By Maude Parmly
The First Reader
The First Reader Series Fifth Grade
Elson Grammar School Reader First Grade
The Child's World First Reader
The Beacon First Grade Reader
Everyday Classics First Reader
Second Grade:
School Reading By Grade Second Year by James Baldwin
Children's Second Grade Reader by Ellen Cyr
Jones Second Grade Reader
Nature Study in Elementary Schools, Readers
A Second Grade Reader
The Beacon Second Grade Reader
Pathways in Nature and Literature: A Second Reader
Third Grade:
Children's Classics Third Reader by Georgia Alexander
Swinton's Third Grade Reader by William Swinton
Third Reader
Jones Third Grade Reader
McGuffey's Natural History Readers: Familiar Animals and Their Wild Kindred
Nature Study in Elementary Schools, Readers
New Barnes Readers - Third Grade
The Riverside Third Grade Reader
Wheeler's Graded Readers Third Grade
McGuffey's Natural History Readers: Familiar Animals and Their Wild Kindred
The Wide Awake Reader
The Child's Country Story Book
The Beacon Third Grade Reader
The American Normal Readers
The Eaton Readers Third Grade
The Merrill Readers Third Grade
Fourth Grade:
Children's Classics Fourth Reader by Georgia Alexander
School Reading By Grades Fourth Year by James Baldwin
Children's Fourth Reader by Ellen Cyr
The Standard Fourth Reader By Epes Sargent(older, but interesting) and another earlier edition with scriptural proverbs.
The Child's Fourth Book
Jones Fourth Grade Reader
Fourth Grade Reader
Harper's Fourth Reader By James Baldwin
Classics Old and New Fourth Grade
The Kipling Reader for Elementary Grades
Stepping Stones to Literature Fourth Grade
Fifth Grade:
Children's Classics Fifth Reader by Georgia Alexander
The National Fifth Reader(Section I is elocution) Older, but interesting.
Fifth Reader
McGuffey's Fifth Eclectic Reader
The New McGuffey Fifth Reader
New National Fifth Reader(Google mislabled this as a third grade reader)
Monroe's New Fifth Reader with elocution. 19th century.
Jones Fifth Grade Reader
Fifth Grade Reader
The Fifth Reader
Farm Life Readers Fifth Grade
Story Hour Readings: Fifth Grade
The Child's Companion
Fifth Reader
The American Normal Readers
The Golden Door Book Fifth Grade Reader
Sixth Grade:
A Reader For Sixth Grade
Children's Classics Sixth Reader by Georgia Alexander
The Sixth Reader of the Popular Series with elocution, 19th century
Graded Literature Readers Sixth Grade
Seventh Grade:
Reader For Seventh Grade
Harper's Seventh Reader By James Baldwin
Everyday Classics Seventh Grade
Eighth Grade:
The Elson Readers Eighth Grade
Baldwin Reader Eighth Grade
Everyday Classics Eighth Grade
Brooks's Readers Eighth Grade Reader
Ungraded/Multiple Grades:
The Young Reader: Young Reader By John Pierpont, published in 1839, stories to teach morals. No grade assigned but looks to be advanced third - fourth grade.
The Literary Reader for Higher Grades
Ontario(Canadian) Graded Readers
Hiawatha Primer and The Book of Nature Myths: Grade levels are not mentioned, but it appears to cover grade two - grade four. Primers are meant for beginning readers.