The long span of 30 years of his teaching career at Agra College was a glorious one. Both as a teacher and researcher his role was outstanding. He earned immense popularity among the students of the Agra College as well as the two post-graduate Colleges viz. St. John's and R.B.S. College who came to attend his history classes. But this popularity he earned with the dint of his hard labour. He delved deep into his subject and got himself identified with its essence. He got rapid promotions and became the Prof. & Head, Department of History, Agra College in 1964.

Besides too many accolades that he received from his Professors and Principals, two are noteworthy for their comprehensive assessments of his abilities.

Prof. A.L. Srivastava who was Professor and Head of History Department, Agra, was all praise for his excellent teaching and humane qualities and had this to say :

It gives me pleasure to certify that Dr. Agam Prasad Mathur, M.A., has been my colleague in the Department of History, Agra College, Agra since July 1952. He has been teaching British History to the M.A. classes for the last several years with success. Besides that paper he was entrusted with Mughal India, Pre-Mughal India & the late Mughals from time to time. He is a diligent and successful teacher, a friendly and dependable colleague and a fine gentleman. He has been associated with extra-curricular activities of the Department. He was for sometime Secretary in charge of our Study Circle. This year he has worked as the Treasurer of the History Association. Mr. Mathur possesses the qualities of an organiser. He is a friend of the student community and he is a pleasant man to work with. Needless to add that he possesses many qualities of head and heart, and an excellent character.

The Principal of Agra College Dr. M. Ray, was greatly impressed by his scholarship, and administrative and teaching abilities and wrote the following:

I have great pleasure in certifying that Dr. A.P. Mathur joined the staff of the History Department at this College, as a lecturer, in July 1952 after having a uniformaly good academic Career at St. John's College, Agra and has been teaching Degree and Postgraduate classes ever since. In December 1960 he was promoted to the post of Associate Professor and worked in that capacity till July 1964 when he was asked to officiate as Professor and Head of the Department. He was confirmed in his post as Professor/Head of the Department of History w.e.f. April 1, 1966.

Prof. Mathur is an excellent teacher. He has specialised in Medieval, European and British History and enjoys a good reputation as a teacher. He has shown brilliant results in the University examinations and I am glad to record that for the last three consecutive years his students have been obtaining First Class with First Position in order of merit at the M.A. examination of the University, which in itself is a testimony of his abilities both as a conscientious teacher and a capable Head of the Department.

As Head of the Department he has been very successful and was able to resolve many a difficult situation by perseverance and intelligence. He is considerate and discreet in seeking cooperation of his colleagues and enjoys universal respect of students. Needless to add Prof. Mathur possesses many administrative and organizational qualities which are essential ingredients for making one a successful Head of a Postgraduate Department.

I have personally known Prof. Mathur ever since he came to this College and I found in him a faithful and devoted teacher; a loyal, willing and dependable colleague. He is methodical in his approach to the historical problems and possesses scholastic bent of mind. Having sound knowledge of his subject, Prof. Mathur is deeply interested in higher studies with sufficient inclination towards original research. He keeps himself abreast of recent researches in History and has himself published a few research papers in the University Journal of Research.

Prof. Mathur is social, smart, straightforward, honest and very resourceful. His conduct and character are exemplary. A man of decent manners and amiable disposition, he possesses all the qualities that go to make one a successful teacher and an academician and I shall always watch his career with interest.

I wish him well in life.

While he was a teacher he came into close contact with the eminent historians of the country like Dr. Jadunath Sarkar, Dr. Kannongo, Dr. Banarsi Prasad Saxena, Dr. Visheshwar Prasad, Dr. Ishwari Prasad, Dr. R.C. Majumdar, Dr. S.P. Sen, Prof. A.L. Basham, Prof. M. Habib, Prof. Nurul Hassan and many more.

He always encouraged his students to do their own original thinking and do not subscribe to any of the prevalent controversial doctorines propounded by the four schools of History viz. the Allahabad School, Aligarh School, Dr. Sarkar's School and the Marxian School. He himself had his own independent views and was never led away by any of these schools. He had special disliking for the attitude of the Marxian scholars who tended to attribute all the happenings of the past to economic causes.. Their allusion to Buddha's renunciation due to economic cause was particularly repugnant to him.

He is a real master of his subject. He has special interest in European and British History and is a master of medieval and modern Indian History. He has specialised in the study of comparative religion. Modern Indian renaissance with special emphasis on social and religious reforms was his subject of research. As a result of original work done on this subject, he is recognised as a great scholar of History. To all historians he is known as historian of Radhasoami Faith and also as one who has made his mark in writing the history of Uttar Pradesh. More particularly Agra and Akbar have engaged his special attention and interest. He was the Chief Convenor of the Seminar on the 400th anniversary of the Sulh-i-Kul organised by the U.P. Government in which all the top dignitaries and academicians of the country participated. His doctoral thesis on Radhasoami Faith, a significant religious reform movement of the 19th century, has been widely acclaimed by the scholars of India and abroad. Besides he has contributed many an article on a variety of topics on Indian history.

His epoch-making thesis "Radhasoami Faith - A Historical Study" published in 1974 by Vikas, placed him in the first rank of historians in India and the world. Applauding the high worth of his thesis, the celebrated historian Dr. R.C. Majumdar wrote the following letter :

Dear Dr. Mathur

I have recd. with great interest and profit your book on 'Radhasoami Faith', which you very kindly sent two months ago. I am sorry I am rather late in acknowledging receipt of it. I was very busy with my literary work and could not devote time to read it with that care and attention which it deserves.

I have now gone through your very interesting and at the same time very learned, critical and thorough discussion of a very interesting religious sect which deserves more attention than it has hitherto received from historians. I was deeply impressed by my visit to Dayalbagh, about a decade ago, and naturally your book was very welcome to me. As you have justly pointed out the rational attitude towards religion displayed by the founder of this sect ever before the time of Rammohan Roy must be noted by all historians who seek after truth and are not carried by emotion inspired by a spirit of hero-worship. I have tried to show in my humble way that Rammohan was undoubtedly a very great figure and his contributions to the making of modern age are not minimised even if we admit as historical truth that he was not the only man to whom is to be credited everything that has created Modern India. I have been, and still am being, strongly condemned for this view, particularly as I am a son of Bengal, but your book adds one more evidence that the credit for ushering the modern age in India must be given to others also - among whom I include the founder of the Radhasoami Faith. By the way, when I visited Dayalbagh I found an unfinished mausoleum whose artistic decoration (inlaid gems) rivals that of Taj Mahal. Has that been finished ?

Yours sincerely

R.C. Majumdar

He was honoured with the Fellowship of the Indian Historical Society (F.I.H.S.) and Fellowship of the Royal Asiatic Society, London (F.R.A.S.). His name also appeared in world's Who is Who. He was nominated as Member of the Executive Council of the Institute of Historical Studies, Historical Record Commission of India, Historical Record Commission of U.P., and a life member of Indian History Congress. He was awarded Life Membership of the Trust for Art and Cultural Heritage. He was also made a Member of International Goodwill Society and Authors Guild of India. He equally made his mark as a research supervisor and produced dozens of Ph.D.'s under his supervision. Thus Dr. Mathur's 30 year-long career at Agra College brought him immense recognition, honour and reputation in the country and abroad.