http://www.chessarch.com/gallery/in...

It should be mentioned that Morgan's <Chess Digest> volumes are extensive, perhaps definitive (at the time), treatments of Openings (v1/1901 - v4/1905).

Entire games are included, though I'm unsure about the accuracy wrt transpositions...

<[the Chess Digest, by Mordecai Morgan. Vol. II. Philadelphia: Patterson & White Co.j

To both author and publishers we tender our congratulations on the appearance of this magnificent volume. It is a characteristic of American enterprise to do things on a large scale, and the work before us is a shining example. Never before have the chess openings been so exhaustively treated; here within a limited space is the lore of large libraries. Fifteen thousand games examined and their opening ino.ves recorded! With two-thirds of the complete work before us we can fully appreciate the immense labor involved, and the patient industry and accuracy with which the author has accomplished his task.

In Vol. II the openings treated are the Evans Gambit, Evans Gambit Declined, Ponziani Opening, Petrofl Defence, Philidor's Defence, King's Knight's Opening, King's Bishop's. Opening, King's Gambit, Salvio Gambit, Muzio Gambit, Kieseritzky Gambit, Allgaier Gambit, Cunningham Gambit, King's liishop's Gambit, King's Gambit Declined, and Vienna Opening—sixteen in all—and 446 large quarto pages are required to contain the sum of well digested and admirably arranged details.

The size of page permits an arrangement of the contents impossible to the usual octavo volume. As an example take the "index" to each opening, which is found in the first section of the volume. Here with six diagrams to the page there is still room to record preceding and subsequent moves, thus enabling the variations of the earlier stages to be readily grasped by the student without the aid of board and men. Farther on, however, the treatment is more exhaustive, diagrams are dispensed with, and the variations carried out to the determining point of the game, say the twentieth move. At the end of each section we are given a selection of actual games carried out to the end. The author indulges in no comment, and offers no opinion as to the merits of the different lines of play. The reader has the results before him and must form his own judgment.

We have only space to add that the work will be completed in three volumes. Two are already issued, and the third will be ready at the end of this month. The price is $2.50 per volume in cloth, or $3.00 in sheep binding, and all orders therefor should be sent to the publishers, Patterson & White Co., Philadelphia, Pa.>

https://books.google.com/books?id=Z...

I think that v1-3 were a complete set, and that v4 was an abridged single volume version.

v1 - 472pp
v2 - 446pp
v3 - 518pp

v4 - 696pp

I can't seem to find v2 anywhere on the net. Here's what it looks like hardcopy:

http://www.amazon.com/The-Chess-Dig...

Volume 4 is obtainable on the net as parts 1 & 2 (part 1 with some difficulty - the google version being corrupt), and as a single volume.

So be careful to check what version you have when downloading.

Actually, here is an advert describing v4 as a updating of v1-3: