By design, BrowZine has a "soft-limit" start date of 2005, so older content is only available by linking out to the library's A-Z via the "See All" link. We do realize this adds an extra click or two, but this limit is intentional for a couple of reasons.
The main reason being that, generally speaking, metadata availability and reliability became increasingly questionable across most publications prior to 2005. Therefore, 2005 was established as a cutoff point for consistency. One key reason as to why the metadata becomes very spotty pre-2005-ish is because the DOI registry was made available to the public in 1997, and wasn't widely adopted by publishers for several years after that. By 2005, most publishers began registering DOIs fairly consistently. While many publishers did go back and start registering DOIs for their older articles, that is not nearly as consistent. When metadata is sporadic, it creates an awkward experience in BrowZine as there are gaps, creating confusion for users and an increased support churn on our end. Such gaps aren't nearly as visible in LibKey, which is why LibKey has no such limits and will provide links to any article with a DOI and the required metadata, regardless of the year.
One other reason for the 2005 limit is that BrowZine's emphasis in general is on current content as that comprises the vast majority of usage on that platform.