The phrase "added to the earlier" is correct and usable in written English.
It can be used when referring to something that has been included or incorporated into a previous discussion or document.
Example: "The new findings were added to the earlier report to provide a more comprehensive analysis."
Alternatives: "supplemented to the previous" or "included in the earlier".
After AD 400 a row of tall pyramids was added to the earlier Northern Platform, which measured 100 by, gradually hiding it from view.
For each of the next tasks, a new component was added to the earlier and otherwise identical task.
The log statistics were not cumulative, and the new report of sixty-nine kills, added to the earlier claims of fifteen, gave Charlie Company its total body count of eighty-four.
He undoubtedly added to the earlier success of Henry IV and Sully in overcoming the threat of anarchy and disorder that was the legacy of the late 16th century.
These functions have the ability to depict the changes in the temporal profile of wind speeds with space and can be added to the earlier empirical and analytical steady state models to update them from steady state to unsteady state "time dependent" simulation.
The discoveries of nitrogen and hydrogen in the latter half of the 18th century, added to the earlier discoveries of carbon dioxide and carbon monoxide, and the discovery that the composition of air is remarkably constant though it is a mixture, all supported Lavoisier's theory.
In addition, speech-language pathology rehabilitation was added to the early mobilization program.
Those efforts, he said, have added to the early success of the parklet, which is regularly filled with patrons of local eateries and nearby professionals.
Little original research has been added to the early, foundational evaluations of ukiyo-e and its artists, especially with regard to relatively minor artists.
South Carolina was added to the early state primary calendar, along with Nevada, to offset the extreme lack of diversity in Iowa and New Hampshire, which have outsized abilities to influence the race.
