Here is the Traditional Roman Breviary online…
divinumofficium.com/cgi-bin/horas/officium.pl
The book form is expensive but you can set this up for PC or mobile device. There is an app that sets it up nicely on android devices.
divinumofficium.com/
Or print them out.
It’s not really the traditional Roman Breviary. It is the breviary that traditionalists (licitly I should point out) use. The more traditional Roman Breviary would be that of Trent, which lasted some 500 or so years before being abrogated by Pius X. Alas he made no provisions to allow for the older breviary to be used, unlike Benedict XVI with Summorum Pontificum which spelled out the licit right to use the pre-conciliar breviary. It logically aligns with the EF Mass and its calendar. But a bit heavy, IMHO, for lay use if you’re a family/working man/woman.
It’s actually a modern, 20th Century breviary, and one that broke with 1000 + y.o. traditions such as saying all three Laudate psalms at the end of the psalmody of Lauds, and the use of psalms 4, 90 and 133 at Compline every day. It also introduced new divisions of the psalms to create Offices of equal length (e.g. Vigils every day of more or less the same length of time), which played havoc with the antiphonary.
The most traditional breviary is the current Benedictine one, which has as its core the psalmody specified by Saint Benedict 1500 years ago. It exists in both pre- and post-conciliar forms.
Of course if one really wants to get nitpicky, the Desert Fathers prayed the entire psalter in
one day…
As for the Roman Breviary, it was reformed many times, for instance introduction of hymns in the 13th Century (which already existed for 5 centuries in the Benedictine breviary), the breviary of Trent, a couple of failed attempts such as the Quinonez Breviary (around the time of the Reformation), the Pius X major changes of 1910, the Holy Week changes of the early '50s, some minor rubrical changes and feast reclassifications in the 50s/early 60s, and now the 1970 LOTH, plus some more modern post-conciliar monastic breviaries (schema B, 150 psalms in a week, and schemas C and D, the psalter spread over two weeks). The Roman breviary has always been far more dynamic than the Monastic breviary.