Helen Ruth Aspaas (Aspaas, Helen Ruth / Aspaas, Helen Ruth )

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  Working With World Regional Geography
  by Jennifer Rogalsky, Helen Ruth Aspaas
  Softcover, W H Freeman & Co, ISBN 0716794608 (0-7167-9460-8)
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  World Regional Geography
  by Lydia M. Pulsipher, Helen Ruth Aspaas
  Softcover, W H Freeman & Co, ISBN 1429204982 (1-4292-0498-2)
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  World Regional Geography: Global Patterns, Local Lives
  by Alex Pulsipher, Lydia Mihelic Pulsipher, Jennifer Rogalsky, Helen Ruth Aspaas, Conrad "Mac" Goodwin
  Softcover, W H Freeman & Co, ISBN 1429214384 (1-4292-1438-4)
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  World Regions Geography
  by Alex Pulsipher, Jennifer Rogalsky, Helen Ruth Aspaas, Lydia M. Pulsipher
  Softcover, Worth Publishers, Incorporated, ISBN 0716746921 (0-7167-4692-1)