Take a look at this.
http://www.qureshiuniversity.com/booksworld.html

Take a look at this.
http://www.qureshiuniversity.com/aboutthefounder.html

Take a look at this.
THE FOREWORD

A foreword (one of the most often misspelled words in the language) is most often written by someone other than the author: an expert in the field, a writer of a similar book, etc. Forewords help the publisher at the level of marketing: An opening statement by an eminent and well-published author gives them added credibility in pitching the book to bookstores. Forewords help the author by putting a stamp of approval on their work.

THE PREFACE

A preface is best understood, I believe, as standing outside the book proper and being about the book. In a preface an author explains briefly why they wrote the book, or how they came to write it. They also often use the preface to establish their credibility, indicating their experience in the topic or their professional suitability to address such a topic. Sometimes they acknowledge those who inspired them or helped them (though these are often put into a separate Acknowledgments section).

THE INTRODUCTION

If a preface is about the book as a book, the introduction is about the content of the book. Sometimes it is as simple as that: It introduces what is covered in the book. Other times it introduces by setting the overall themes of the book, or by establishing definitions and methodology that will be used throughout the book. Scholarly writers sometimes use the introduction to tell their profession how the book should be viewed academically (that is, they position the book as a particular approach within a discipline or part of a discipline). This latter material is appropriate for a preface, as well. The point is that it should appear in the preface or the introduction, not both.

http://www.qureshiuniversity.com/booksworld.html

Can you write the foreword for these books?
How soon should I expect a response from you?