Add 2nd column to union query

This union query takes email addresses from various fields and sources and presents them as a single column of data (no duplicates). I would like a second column to come up, containing the CIFM_NBR field which is present in the 4_QRY_Final query. How do I modify to get to that?

SELECT CIFM_EMLHP_ADDR_502 FROM 4_QRY_Final
UNION SELECT CIFM_EMLHP_ADDR_505 FROM 4_QRY_Final
WHERE CIFM_EMLHP_ADDR_505 IS NOT NULL
UNION SELECT CIFM_EMLHP_ADDR_508 FROM 4_QRY_Final
WHERE CIFM_EMLHP_ADDR_508 IS NOT NULL
UNION SELECT CIFM_EMLHP_ADDR_511 FROM 4_QRY_Final
WHERE CIFM_EMLHP_ADDR_511 IS NOT NULL
UNION SELECT CIFM_EMLHP_ADDR_514 FROM 4_QRY_Final
WHERE CIFM_EMLHP_ADDR_514 IS NOT NULL
UNION SELECT CIFM_EMLHP_ADDR_517 FROM 4_QRY_Final
WHERE CIFM_EMLHP_ADDR_517 IS NOT NULL
UNION SELECT EmailAddress FROM 4_QRY_Final
WHERE EmailAddress IS NOT NULL
UNION SELECT EmailAddress FROM _20140128_ABCStaff
UNION SELECT EmailAddress FROM _20140128_DEFStaff;