| FOF Code | Description |
| + FL343062033.Q | Federal government pension funds; municipal securities held by National Railroad Retirement Investment Trust; asset |
| + FU343062033.Q | Federal government pension funds; municipal securities held by National Railroad Retirement Investment Trust; asset |
| + FR343062033.Q | Federal government pension funds; municipal securities held by National Railroad Retirement Investment Trust; asset |
| + FV343062033.Q | Federal government pension funds; municipal securities held by National Railroad Retirement Investment Trust; asset |