Discovering Treasure Skillbook (The New Open Highways)Ida Mae Johnson, Alfonso R Ramirez, Mildred Beatty Smith, John C Manning, Joseph M. Wepman, Lorraine M Sullivan, William A Jenkins, Ira E. Aaron, Helen M Robinson, A. Sterl Artley · First published 1977AdventureOpen the Tome
MilestonesIra E. Aaron, A. Sterl Artley, Kenneth S. Goodman, William A. Jenkins, John C. Manning, Marion Monroe, Wilma J. Pyle, Helen M Robinson, Andrew Schiller, Mildred Beatty Smith · First published 1975Open the Tome
The New Open HighwaysIda Mae Johnson, Alfonso R. Ramirez, Mildred Beatty Smith, John C. Manning, Joseph M. Wepman, Lorraine M. Sullivan, William A. Jenkins, Ira E. Aaron, Helen M Robinson, A. Sterl Artley, Marion Monroe · First published 1974Open the Tome
Bright Horizons Book 2Charlotte S. Huck, Helen M Robinson, Ira E. Aaron, Charlottes Huck, A. Sterl Artley · First published 1969Open the Tome
MORE POWER (The Open Highways Readers)Marion Monroe, Helen M Robinson, A. Sterl Artley, Charlotte S. Huck, William A. Jenkins, Ira E. Aaron · First published 1968Open the Tome
Splendid JourneyHelen M Robinson, Marion Monroe, A. Sterl Artley, Charlotte S. Huck, William A. Jenkins, Ira E. Aaron · First published 1968Open the Tome
Open HighwaysHelen M Robinson, Marion Monroe, A. Sterl Artley, Ira E. Aaron, Charlotte S. Huck, William A. Jenkins · First published 1965 · Latest edition 1966Open the Tome
Open Highways Book 6Marion Monroe, Helen M Robinson, A. Sterl Artley, Jenkins, William A., Ira E. Aaron, Samuel Weintraub · First published 1966Open the Tome
