S. Harold Collins

A word in the hand

1984

Verbs

1990

Subtraction

1986

Substitute ingredients

1989

Sound Hearing

1992

Songs in sign

1995

Signing at school

1992

Sentences

1999

Prepositions, Conjunctions and Interjections (Straight Forward English)

1992

Prepositions, Conjunctions and Interjections (Straight Forward English Series)

1992

Pre-Geometry, Book 2

1990

Pre-Geometry, Book 1

1990

Pre-Algebra, Book 2

1989

Pre-Algebra, Book 1

1989

Number & letter games

1995

Nouns & Pronouns (Straight Forward English Series)

1988

Multiplication

1986

Mother Goose in Sign (Beginning Sign Language)

1994