How is Mr. Hall described in the novel, The Vandemark Mummy?

Sam Hall is a classical language scholar who has been teaching in a high school while his wife makes a much higher salary working for a congressman. When he has an opportunity to teach in his field at a small New England college, he accepts the job and concurs with his wife's decision that she remain in Oregon. Mr. Hall is not overly confident of his abilities, particularly as the curator of the Egyptian collection. It takes an outsider to tell Phineas and Althea that their father had a paper published in the Classical Language Journal and to assure him that he is qualified for the job. But, despite his concerns over his work, he is always a loving and understanding father who has taken on the role of single parent.