Crossword Puzzle Merger agreements?

Clue: Merger agreements?

Half of a 1955 merger, for short (CIO with 3 letters)
Andalusian agreements (SISIS with 5 letters)
Name in a 2001 merger (AOL with 3 letters)
Solemn agreements (COVENANTS with 9 letters)
Like some agreements (e.g. ORAL with 4 letters)
Merger announcement (IDO with 3 letters)
WB merger partner (UPN with 3 letters)
Rent agreements (LEASES with 6 letters)
Location for potential mergers? (ONRAMP with 6 letters)
1980s "NBC News Overnight" anchor / Feared insect [merger] (ELLERBEE with 8 letters)