This section is from the book "The Law Of Contracts", by William Herbert Page. Also available from Amazon: Commercial Contracts: A Practical Guide to Deals, Contracts, Agreements and Promises.
Sec. 439. Some influence must exist. Sec. 440. Influence exerted must overpower the will. Sec. 441. Relation of undue influence to duress. Sec. 442. Relation of undue influence to fraud. Sec. 443. Undue influence a question of fact. Sec. 444. Burden of proof. Sec. 445. By whom undue influence may be exerted.
III. RELATIONS FROM WHICH PRESUMPTION ARTSES
Sec. 446. Presumptions of undue influence.
Sec. 447. Illustrations of confidential relations - Parent and child. Sec. 448. Ancestor and heir. Sec. 449. Other relationships by blood. Sec. 450. Guardian and ward. Sec. 451. Husband and wife. Sec. 452. Persons in improper sexual relations. Sec. 453. Principal and agent. Sec. 454. Attorney and client. Sec. 455. Physician and patient. Sec. 456. Religious advisers.
IV. COMBINATIONS OF CONSTRAINT
Sec. 460. Confidential relationship and misrepresentation.
Sec. 461. Confidential relationship and non-disclosure.
Sec. 462. Weakness of mind.
Sec. 463. Weakness of mind and misrepresentation.
Sec. 464. Misrepresentation of law and actual influence.
Sec. 465. Inadequacy of consideration.
Sec. 467. Confidential relationship and inadequacy of consideration.
Sec. 468. Inadequacy of consideration and circumstances of oppression.
Sec. 469. Inadequacy of consideration and unfair dealing.
Sec. 470. Inadequacy of consideration and weakness of mind.
Sec. 471. Confidential relationship, weakness of mind and inadequacy of consideration.
Sec. 472. Confidential relationship, weakness of mind, inadequacy of consideration and circumstances of oppression.
Sec. 473. Inadequacy of consideration, weakness of mind and non-disclosure.
V. CONTRACTS WITH EXPECTANT HEIRS, REMAINDERMEN
AND REVERSIONERS Sec. 474. Nature, scope and effect of such contracts. Sec. 476. What constitutes inadequacy of consideration in contracts with expectant heirs. Sec. 476. Effect of knowledge or consent of ancestor.
Sec. 477. Effect of undue influence.
Sec. 480. Ratification.