Theotokos: Prayers to Our Blessed Mother

Some internet resources on prayers to Our Blessed Mother:

Thesaurus Precum Latinarum

The Thesaurus Precum Latinarum is a collection of Latin prayers and Latin hymns with English translations and brief commentaries. The commentaries outline the origins, history and use of many of the items with the prayers themselves being drawn from the entire 2,000 year history of the Church. The collection contains a wide range of items, such as basic prayers (Gloria Patri, Pater noster, Ave Maria), creeds, prayers before and after Mass, Eucharistic Adoration, Litanies, Hymns, Little Offices, Marian devotions, the Rosary, the Angelus, prayers to the Angels and Saints, and prayers for various occasions.

The goal of the Thesaurus Precum Latinarum is to provide a resource to help people develop an appreciation for Latin prayers and liturgy and an appreciation of the 2,000 years of their use in the Church.

Michael Martin has gathered an impressive number of ancient, traditional, and modern prayers to Our Lady. 
Find his list of prayers here

The Mary Page at the University of Dayton

Quote directly from home page:

"We are The Marian Library/International Marian Research Institute located at the University of Dayton, a Catholic and Marianist institution of higher learning, in Dayton, Ohio.

We are an international center of study and research on Mary, the Mother of Jesus Christ.  The Marian Library holds the world's largest collection of printed materials on the Blessed Virgin. Our academic program has pontifical character.

Our goal is to gather and present information about the Virgin Mary and to lead people to a loving knowledge of her. Learning more about Mary, we develop a fuller knowledge of Christ, his Church and Christian life."

The Mary Page offers a variety of Marian Prayers from classical such as the Angelus and the Memorare to prayers of popes and saints addressed to Our Lady.