There has never been a proper Laura Bow collection (though its possible that the two games boxes have been sold together in bundled deals). The closest it has been collected are in these products.
Roberta Williams Anthology Edit
Laura Bow series is included along Mystery House (and other SierraVentures series) along with the King's Quest, and VGA version of Mixed-Up Mother Goose.
King's Quest Collection Series Edit
Included Laura Bow Series, and Mixed-Up Mother Goose Deluxe as bonus games.
The Colonel's Bequest: A Laura Bow Murder Mystery - 1920's college girl must solve a murder set in a New Orleans mansion.
The Dagger of Amon Ra: A Laura Bow Murder Mystery - Cub reporter Laura Bow explores a New York museum as she solves this Egyptian whodunit.
Laura Bow BundleEdit
Buy The Colonel's Bequest and Dagger of the Amon Ra separately or as a discounted bundle on GOG.