Harvard Library recently changed the way we link to Harvard-licensed content from within PubMed. In the past, we were using the NCBI's LinkOut service which required quite a bit of maintenance on the part of Harvard Library. We now use the NCBI's Outside Tool. Along with this change, Harvard Library changed the branding, replacing the purple Find it at Harvard links with blue ones that say "Try Harvard Library."
You'll see these links in PubMed if you use the link on the Countway home page. However, you can set your MyNCBI account to always display these links, regardless of how you come to PubMed, by making a change in your MyNCBI settings. To make the change, open up your MyNCBI account page and:
1) follow the "NCBI Site Preferences" link in the upper right.
2) On the left of the preferences page, click the "Outside Tool" link, under "PubMed Preferences".
3) Choose Harvard from the list of institutions.
Unlike Linkout, you can only have one institution active. However, the Outside Tool doesn't interfere with any selections you've made for LinkOut. Hence, if you've set LinkOut to display MGH's library links, they will still work fine with the Outside Tool turned on.