Assertion: card index | /r/HasProperty | secure
Facets:
value: for keeping the cards
type: PURPOSE
Source sentences:
text: In 1860, Ezra Abbot began designing a card catalog that was easily accessible and secure for keeping the cards in order; he managed this by placing the cards on edge between two wooden blocks.
text: Assistant Librarian Ezra Abbot takes on the task of designing a card catalog that could be easily accessed but was secure from getting out of order.