MS Office AIO Files

I work as a technician going to people's houses and businesses. I reload a lot of computers and I reinstall office pretty often. Sometime I must use my cellular data for the download. Often times for older versions I have to tu to torrent sites even though I have a valid key.

For Windows I've found ISOs of each version and edition. I've also found some with every edition for that version, ex: Windows 7 Home Premium x32, Home Premium x64, Pro x32 etc. I know that there was a MS Office 2010 Single Image which would install the correct version based on serial key.

Does anyone know where to get all the ISOs or offline installers, and if possible, single image installers, for MS Office 2000 and up?