I had over 2500 songs of Lata-ji on the hard-drive that crashed, though I would've heard only half of them! Fortunately, I had copied them on CDs and given them to my brother in India --- so they were not permanently lost.
But while trying to restore on computer my collection of Lata-ji's songs, I chose just those songs that I like most. As of now, I have put together close to 275 selected songs from 1948 to 1998, and tagged them with year/film name/music director. Most of them are popular, easy-to-find songs, and there are just a handful of rare ones. They are taken from film discs, CDs, audio-tapes, vinyls and HF uploads. I've checked each track for sound-quality, sound-edited them as required, and adjusted the volume to the 'default' of GoldWave.
Please let me know if it is of interest to you, whether you'd like me to upload them, in case you'd also like to build up a collection, in chronological order, of many of Lata-ji's finest songs through the years (upto 1987 only, due to forum rules).