The "ABC of Vegetable Gardening" covers a wide range of topics related to cultivating and maintaining a successful vegetable garden. The title suggests that the book is organized in an alphabetical format, making it easy for readers to navigate and find information on specific vegetables or gardening practices.

Key topics addressed in the book may include soil preparation, seed selection, planting techniques, cultivation, pest control, and harvesting. The alphabetical arrangement likely allows readers to look up specific vegetables or gardening concepts in an organized manner.

While the book may reflect the gardening practices and techniques of its time, it can still offer valuable insights for those interested in traditional and historical approaches to vegetable gardening. Keep in mind that modern gardening practices and understanding may have evolved since the book's publication, so it's advisable to complement the information with contemporary resources for a comprehensive understanding of vegetable gardening.