Not so far as I can tell, though the Internet Archive may have some individual holdings. (There are other Sears collections however.)

Searching author "Sears, Roebuck and Company": <https://archive.org/search?query=creator%3A%22Sears%2C+Roebu...>

1918, for example: <https://archive.org/details/catalog1918sear>

Duke University has an (offline) physical archive, described here:

<https://archives.lib.duke.edu/catalog/searscatalogs/pdf> [PDF]